First, the tiger. The pests that damage local crops are yellow tigers.
1, damage characteristics: larvae cut off seedlings from the ground, resulting in lack of seedlings broken ridge, the main stem after lignification, feeding the root surface of the plant near the root epidermis, resulting in root injury, affecting plant roots to absorb water, so that plants gradually wilting withered.
2. Living habits: 2 generations in 1 year, generally 4-6 instar larvae wintering in 2-15 cm deep soil layer, most often 7-10 cm, mainly concentrated on the sunny side of Tianlan and dike bank slopes 5- 8 cm soil in the winter, late spring in early March winter overwhelming larvae began to move, in mid-April in the soil for roomization, flood season 20-30 days. From May to June, the most serious damage occurred. Adults grow into nights, with strong phototaxis and chemotaxis. Eggs are scattered on the surface of the dead branches, leaves, roots, and plants near the surface of the leaves 1-3 cm, the general ash, spiny vegetables, field bindweed is the yellow tigers feeding, spawning of the marked plant . The larvae suffer the most damage after the third instar. The spring and autumn seasons are endangered in the middle of the year, but the spring is more important than autumn.
3. Prevention and control measures (1) Forecast and forecast: The adult moth can be measured by black light or sweet and sour liquid, usually from mid-April to mid-May; the day with the highest number of moths is the peak, pushing back 20-25. Days are the 2-3 instar larvae's prosperous period, which is suitable for prevention and control; the larvae are measured by field survey methods, such as 0.5-1 larvae per square meter before stipulating, or 0.1-0.3 larvae per square metre after setting. The head should be controlled. Climate drought is conducive to great development.
(2) Agricultural control: (1) Choosing a cornice and selecting a corn field in front of a corn field should be followed by a rotation of wheat and rice. 2 In time, it is necessary to turn over the irrigation in winter to eliminate the source of insects, and to clear the weeds in the fields in early spring.
(3) trapping prevention and control: 1 black light trap adult. 2 sweet and sour vinegar trap adult insects.
(4) Chemical control: 1 Spraying: The ground tiger is resistant to insects at the 1-3 instar larvae and exposed to host plants or the ground. It is an appropriate period for chemical control and can be used 90% crystal trichlorfon 800-1000 times liquid, 50 % Phoxim EC 800 times solution, 50% Methionate 1000-2000 solution, 20% Chrysanthemum 1000-1500 solution, and 2.5% deltamethrin (Destroy) EC 3000 times solution. 2 Poison baits: Most of the baits should be used when they start eating after 3rd instar. Mix 2.5% trichlorfon powder 0.5 kg or 90% crystal dipterex 1000 times per acre evenly on the chopped fresh grass, or use 90% crystals. Dichlorfon was added with 2.5 to 5 kg of water and evenly mixed with 50 kg of sauteed wheat bran or crushed cottonseed cake (oil dregs) and mixed with 50 g of 50 mg of phoxim EC on 5 kg of cotton seed cake. The bait was scattered into small piles at regular intervals in the vegetable field in the evening.
Second, the nightfall moth. A new insect pest that broke out in our area in 2004 has often been mistaken for cabbage or cotton bollworm.
1, damage characteristics: larvae have gluttony, feeding leaves, resulting in a large area of ​​leaves nick, but also take buds and soybean meal.
2. Habits: In the northern regions of China, two generations took place in the year and the wintering in the earth was carried out. The first generation of adult eclosion spawns in June each year, and the egg period is about 7 days. From mid-June to mid-July, I will injure soybeans. The juvenile larvae have the habit of turning on the leaves, and when feeding, they no longer roll up when they grow up, and eat up a large number of leaves. The first-generation larvae entered the soil in July and built up soils. The adult larvae spawned and laid eggs in August. The second-generation larvae devoured the leaves and eat a lot of pods and other fruits. The larvae became old and matured in September. Overwintering. Adults need to absorb nectar nutrition and phototaxis. The young larvae are frightened and have backward escape habits, and the older larvae are bounced to the ground when they are disturbed.
3, prevention and control methods: (1) with black light and sweet and sour pots trapped adult. (2) Control of chemicals: Before the third instar larvae, 21% of the larvae were used to prevent and kill with a broad-spectrum insecticide such as 6000 times liquid of quail-killing emulsifiable concentrate, 5,000 times of 2.5% kungfu emulsifiable concentrate, and 3000% of 2.5% Uranus emulsifiable concentrate.
Three, red spider
1, damage characteristics: Cheng, juvenile, if the crickets in the leaves of the net back sap feeding, victim bean leaves yellow and white spots early, gradually become gray spots and erythema. In severe cases, leaf blade curling, coke fall off, serious block like a fire. Damaged bean plants grew dwarf, with small scabs and smaller beans.
2. Habits: Generally, the female adult cicadas colonize the leaves of the bean field, the weeds roots, or the earth seams. The winter occurs more than 10 generations each year. When the temperature rises to an average of 5-7°C in spring, the females in the winter pass out of the earth and breed on the weeds such as peony, dandelion and plantain. From June to July, they are transferred to the soybeans, and the silk is pulled on the back of the leaves. Cluster damage, the end of July in the end of August, the beginning of August less, in June and July in the case of continuous high-temperature drought, the rapid reproduction, as the damage. The optimum temperature is 29-30°C and the optimum relative humidity is 35-55%. More rain or increased humidity in the bean field is detrimental to the development of the eggs and larvae of the red spider, and the development of the raccoon dog, which can reduce the number. Extensive tillage, excessive weeds, or sparsely growing plots occur, often from the Tanabe spot, and spread throughout the field.
3. Control methods (1) Agricultural control: Remove the weeds and litter from the ground, roadsides, fields, and plough the land to eliminate overwhelming insect sources. Reasonable irrigation and fertilization will promote the robust growth of plants and enhance their ability to resist locust damage. (2) Biological control: The important natural enemies of Soybean spider mite are various grasshoppers, towering six-pointed thrips, horizontal stripes thrips, and some ladybugs, dragonflies, and spiders. Preying on red spiders in the field may be a deterrent to their occurrence. . (3) Chemical control: strengthen inspection of insects and control the occurrence of spotting. When it was found that there were yellow and white spots on the leaves of sporadic bean plants, they were spotted and sprayed immediately. It can be used to dilute to 1000 times with 20% pyridazine emulsifiable concentrate, 20% triclosan EC, 30% chlorate EC, 40% amithiophos, etc., and spray 50 kg per acre; 73% chlorate EC 1500 Double dilution solution, 50 kg per mu. Note that the sprayer faces upwards, sprays up and down, and sprays evenly. According to the characteristics of high density and difficult spraying of soybean crops, “3911†0.15 kilograms of mixed sand and 20 kilograms per mu can be used for field fumigation control.
1, damage characteristics: larvae cut off seedlings from the ground, resulting in lack of seedlings broken ridge, the main stem after lignification, feeding the root surface of the plant near the root epidermis, resulting in root injury, affecting plant roots to absorb water, so that plants gradually wilting withered.
2. Living habits: 2 generations in 1 year, generally 4-6 instar larvae wintering in 2-15 cm deep soil layer, most often 7-10 cm, mainly concentrated on the sunny side of Tianlan and dike bank slopes 5- 8 cm soil in the winter, late spring in early March winter overwhelming larvae began to move, in mid-April in the soil for roomization, flood season 20-30 days. From May to June, the most serious damage occurred. Adults grow into nights, with strong phototaxis and chemotaxis. Eggs are scattered on the surface of the dead branches, leaves, roots, and plants near the surface of the leaves 1-3 cm, the general ash, spiny vegetables, field bindweed is the yellow tigers feeding, spawning of the marked plant . The larvae suffer the most damage after the third instar. The spring and autumn seasons are endangered in the middle of the year, but the spring is more important than autumn.
3. Prevention and control measures (1) Forecast and forecast: The adult moth can be measured by black light or sweet and sour liquid, usually from mid-April to mid-May; the day with the highest number of moths is the peak, pushing back 20-25. Days are the 2-3 instar larvae's prosperous period, which is suitable for prevention and control; the larvae are measured by field survey methods, such as 0.5-1 larvae per square meter before stipulating, or 0.1-0.3 larvae per square metre after setting. The head should be controlled. Climate drought is conducive to great development.
(2) Agricultural control: (1) Choosing a cornice and selecting a corn field in front of a corn field should be followed by a rotation of wheat and rice. 2 In time, it is necessary to turn over the irrigation in winter to eliminate the source of insects, and to clear the weeds in the fields in early spring.
(3) trapping prevention and control: 1 black light trap adult. 2 sweet and sour vinegar trap adult insects.
(4) Chemical control: 1 Spraying: The ground tiger is resistant to insects at the 1-3 instar larvae and exposed to host plants or the ground. It is an appropriate period for chemical control and can be used 90% crystal trichlorfon 800-1000 times liquid, 50 % Phoxim EC 800 times solution, 50% Methionate 1000-2000 solution, 20% Chrysanthemum 1000-1500 solution, and 2.5% deltamethrin (Destroy) EC 3000 times solution. 2 Poison baits: Most of the baits should be used when they start eating after 3rd instar. Mix 2.5% trichlorfon powder 0.5 kg or 90% crystal dipterex 1000 times per acre evenly on the chopped fresh grass, or use 90% crystals. Dichlorfon was added with 2.5 to 5 kg of water and evenly mixed with 50 kg of sauteed wheat bran or crushed cottonseed cake (oil dregs) and mixed with 50 g of 50 mg of phoxim EC on 5 kg of cotton seed cake. The bait was scattered into small piles at regular intervals in the vegetable field in the evening.
Second, the nightfall moth. A new insect pest that broke out in our area in 2004 has often been mistaken for cabbage or cotton bollworm.
1, damage characteristics: larvae have gluttony, feeding leaves, resulting in a large area of ​​leaves nick, but also take buds and soybean meal.
2. Habits: In the northern regions of China, two generations took place in the year and the wintering in the earth was carried out. The first generation of adult eclosion spawns in June each year, and the egg period is about 7 days. From mid-June to mid-July, I will injure soybeans. The juvenile larvae have the habit of turning on the leaves, and when feeding, they no longer roll up when they grow up, and eat up a large number of leaves. The first-generation larvae entered the soil in July and built up soils. The adult larvae spawned and laid eggs in August. The second-generation larvae devoured the leaves and eat a lot of pods and other fruits. The larvae became old and matured in September. Overwintering. Adults need to absorb nectar nutrition and phototaxis. The young larvae are frightened and have backward escape habits, and the older larvae are bounced to the ground when they are disturbed.
3, prevention and control methods: (1) with black light and sweet and sour pots trapped adult. (2) Control of chemicals: Before the third instar larvae, 21% of the larvae were used to prevent and kill with a broad-spectrum insecticide such as 6000 times liquid of quail-killing emulsifiable concentrate, 5,000 times of 2.5% kungfu emulsifiable concentrate, and 3000% of 2.5% Uranus emulsifiable concentrate.
Three, red spider
1, damage characteristics: Cheng, juvenile, if the crickets in the leaves of the net back sap feeding, victim bean leaves yellow and white spots early, gradually become gray spots and erythema. In severe cases, leaf blade curling, coke fall off, serious block like a fire. Damaged bean plants grew dwarf, with small scabs and smaller beans.
2. Habits: Generally, the female adult cicadas colonize the leaves of the bean field, the weeds roots, or the earth seams. The winter occurs more than 10 generations each year. When the temperature rises to an average of 5-7°C in spring, the females in the winter pass out of the earth and breed on the weeds such as peony, dandelion and plantain. From June to July, they are transferred to the soybeans, and the silk is pulled on the back of the leaves. Cluster damage, the end of July in the end of August, the beginning of August less, in June and July in the case of continuous high-temperature drought, the rapid reproduction, as the damage. The optimum temperature is 29-30°C and the optimum relative humidity is 35-55%. More rain or increased humidity in the bean field is detrimental to the development of the eggs and larvae of the red spider, and the development of the raccoon dog, which can reduce the number. Extensive tillage, excessive weeds, or sparsely growing plots occur, often from the Tanabe spot, and spread throughout the field.
3. Control methods (1) Agricultural control: Remove the weeds and litter from the ground, roadsides, fields, and plough the land to eliminate overwhelming insect sources. Reasonable irrigation and fertilization will promote the robust growth of plants and enhance their ability to resist locust damage. (2) Biological control: The important natural enemies of Soybean spider mite are various grasshoppers, towering six-pointed thrips, horizontal stripes thrips, and some ladybugs, dragonflies, and spiders. Preying on red spiders in the field may be a deterrent to their occurrence. . (3) Chemical control: strengthen inspection of insects and control the occurrence of spotting. When it was found that there were yellow and white spots on the leaves of sporadic bean plants, they were spotted and sprayed immediately. It can be used to dilute to 1000 times with 20% pyridazine emulsifiable concentrate, 20% triclosan EC, 30% chlorate EC, 40% amithiophos, etc., and spray 50 kg per acre; 73% chlorate EC 1500 Double dilution solution, 50 kg per mu. Note that the sprayer faces upwards, sprays up and down, and sprays evenly. According to the characteristics of high density and difficult spraying of soybean crops, “3911†0.15 kilograms of mixed sand and 20 kilograms per mu can be used for field fumigation control.
Perennial herb, hi cool, humid place, is a Ranunculaceae. Stalks rampant, coarse 3-7 mm, dense fibrous roots. Basal leaves 10-25 cm long, county long-handled; leaf blade herbaceous, 3-cleavage, all lobes shaved, central all-lobes rhombic Narrow ovate, up to 11 cm, long-pointed, pinnate, lobes Margin incised, with sharply small serrate, short veins along veins, abaxially glabrous, veins distinct, lateral lobes shorter, 6 cm long, 2-parted near base; stalk length 7-20 cm , Glabrous. Flowers small, yellowish green, about 1 cm in diameter. Its underground rhizome is upward branches, growing up several branches each year was chicken claw-like. Slow the cold, good leader.
Chicken Claw Coptis,Authentic Coptis,Pieces Authentic Coptis
Chongqing Taisun Pharmaceutical Co., Ltd. , http://www.taisuncoptis.com