At present, the autumn wheat planting work in Xi'an County of Gansu Province has been launched one after another. In order to implement the idea of ​​“integrated technical measures, comprehensive and balanced production increaseâ€, we insist on “integrated integrated technology, formula fertilization first, plant protection and control, accompanied by technology investment. "Technology promotion principles, strengthening key technical measures in the autumn broadcast work, there is no time to delay.
Science and technology farming management is square
The whole land is turned over and the crop is inverted. In the summer leisure period, according to the lyrics, the reasonable mechanical deep turn (30-40 cm) is stored and protected. Shallow tillage or rotary tillage about 10 days before sowing. Avoid heavy cropping, you can change the crop rotation of soybeans, rapeseed, potatoes, vegetables and other economic crops, which can significantly reduce the incidence. Strip rust in the summer area before the autumn sowing requires the elimination of secondary wheat seedlings to reduce the incidence of autumn seedlings.
Due to the warm winter phenomenon, the late-time broadcast and wide-width broadcast are suitable, and the "late-time broadcast" technology can be reasonably implemented. Wheat wide-width seeding technology should be vigorously promoted to improve the uniformity of emergence.
Pre-sow dressing, delicate symptomatic in the prevention and control strategy, continue to adhere to the principle of "emphasis on key points, taking into account the general, prevention-oriented, comprehensive prevention, local conditions, and classification guidance" to prevent disease before it happens. We will comprehensively implement the prevention and control measures for autumn and winter pests and diseases such as wheat stripe rust with "drug detection, discovery, and control", and put an end to the "white seed seed" to achieve the overall goal of 100% prevention and treatment of autumn seedlings.
Seed dressing is reasonable
Main control objects for wheat autumn seeding dressing: wheat stripe rust, concurrent treatment of wheat powdery mildew; soil-borne diseases, mainly total erosion, root rot; systemic infestation, mainly smut and black smut Disease; underground pests, mainly cockroaches, cockroaches and golden worms. The type of seed dressing, the method of application and the amount of the drug should be determined according to the type of local pests and diseases.
Wheat stripe rust prevention and control in summer and wintering areas. Triazole fungicides with systemic conduction and long-lasting effect, such as triadimefon (also known as triadimefon), triazolol, propiconazole, diniconazole, are selected. Etc. For areas where multiple pests and diseases at the seedling stage occur simultaneously and alternately, it is advisable to use a fungicide and an insecticide for mixed seed dressing. The effective concentration of the triazolone and other fungicides is very low, and the seed dressing can achieve a good disease prevention effect according to the ratio of 0.03% (active ingredient) of the dry seed weight.
Prevention and control of underground pests Mixing wheat seeds and treating soil before sowing is the most effective measure to control wheat underground pests. Seed dressing treatment: the general occurrence area of ​​underground pests. 50% phoxim seed dressing can be selected, according to the seed amount of 0.2%, that is, 100 kg of seed medicine 100 g, water 2-3 kg, 48% chlorpyrifos EC can also be used for seed dressing 0.3% of seed weight, after mixing It can be planted in 4-6 hours. The area where the underground pests are seriously affected should be controlled by combination of soil treatment and seed dressing. The soil treatment can be applied to the ground with 3% phoxim granules 2-2.5 kg, and then turned into the soil. It is also possible to use 250% of 50% phoxim emulsifiable concentrate, 1-2 kg of water, and 20-25 kg of fine soil to make toxic soil, spread evenly on the ground, and then turn into the soil.
The control of diseases such as smut, total eclipse and powdery mildew can not only prevent and control wheat smut, but also effectively control the occurrence and damage of wheat rust, total eclipse and powdery mildew before winter, and reduce The amount of overwintering bacteria.
Accurately grasp the operation according to the chapter
According to the situation of the diseased insects in the area, determine the type of medication. If the local wheat seedlings occur very lightly, the disease occurs more seriously, and only the fungicide can be used for seed dressing; if the pests and diseases are mixed, it is necessary to use the insecticide to dress the seeds, and also to use the fungicide to seed; if the underground pests occur Heavier, seed dressing and soil treatment should be adopted to control wheat pests.
Accurately grasp the amount of pesticides. For the control of wheat underground pests, 50% phoxim emulsifiable concentrate can be used to control diseases such as wheat black stalk, total eclipse, powdery mildew and sheath blight. It can be mixed with 15% powder rusting wet powder and 6% lycopene suspension agent. Wheat.
Pay attention to the seed dressing method. If you want to use seed dressing with pesticides and seed dressing with fungicides, you should first mix the insecticides, mix the fungicides after the piles, and then immediately sow.
With the mix and play, can not be placed for a long time. After the wheat is seeded with the insecticide, it is generally piled up for 2-3 hours, up to 5-6 hours, and the seed is immediately sown after being absorbed by the wheat seed. Generally, after the wheat is mixed with the fungicide, it should be sown immediately or immediately after being dried.
It is necessary to strictly follow the dressing operation rules to prevent poisoning of humans and animals. It is best to implement uniform seed dressing.
Formulated fertilization, early growth
In the formula fertilization measures, vigorously promote the "re-application of base fertilizer to cultivate soil, adhere to bio-organic, based on long-term slow release, leaf micro-complementary fertilization, comprehensive nutritional formula." In order to stabilize the nitrogen and increase phosphorus, the application of potassium is necessary, a large amount of organic fertilizer is added, 70% nitrogen fertilizer is used as base fertilizer, 30% nitrogen fertilizer is used as top dressing; medium-term potassium supplementation and foliar spray fertilizer.
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