“Xiangyue ç²³222†is a new early-maturing late-maturing cultivar developed by the Jiangsu (Wujin) Rice Research Institute through “Ning 9108/075// Ningjing No.3â€. It participated in the Jiangsu Regional Rice Experiment in 2015. It has the characteristics of high yield, high quality, stable yield, disease resistance, wide adaptability, and good comprehensive traits. It is suitable for planting in the middle and upper fertility conditions along the Yangtze River and southern Jiangsu. In order to promote the promotion and planting of "Xiangyin ç²³222", the characteristics and cultivation techniques are summarized as follows.
1 Characteristic characteristics
1.1 Biological characteristics
“Xiangyue ç²³222†is a late-maturing late-maturing variety, suitable for planting in the south of the Yangtze River and southern Fujian. The whole growth period is 167.2 d, which is 3.4 d longer than the control “Wuyunyu No.23â€. The total number of leaves in a lifetime is 17 ~18 sheets, plant height 94.60 cm, strong lodging resistance, compact plant shape, strong tillering force; leaves are straight and the leaves are dark green; the panicle type is larger, the ear length is 16.9 cm, and the total number of grains per panicle is about 180 grains. The grain density is compact, there is no awning, the graininess is medium, the seed setting rate is above 94%, the 1000-grain weight is 28 g; the effective panicle per 667 m2 is about 200,000 ears, and the color change is good in the later stage, and the stalk green seed yellow does not prematurely decay.
1.2 Rice quality
"Xiangyue ç²³222" is a semi-glutinous rice variety, which is commonly known as soft rice. The rice is soft, crystal clear and fragrant. According to the 2015 Ministry of Agriculture Food Quality Supervision, Inspection and Testing Center (Wuhan) inspection (test according to GB/T17891-1999, NY/T593-2002) report, the roughness rate of this variety is 80.4%, the polished rice rate is 67.7%, and the whole polished rice rate is 59.5. The grain length is 5.2 mm, the aspect ratio is 1.7, the chalkiness rate is 32%, the chalkiness is 7.9, the amylose content is 17.5%, the gel consistency is 65 mm, and the alkali value is 6.0.
1.3 resistance identification
“Xiangyue 粳222†has strong resistance to lodging. In 2015, the Institute of Agricultural Sciences of Jiangsu Academy of Agricultural Sciences carried out disease resistance identification, and the resistance to six rice blast races ZB27, ZC15, ZD7, ZE3, ZF1 and ZG1 were respectively It is 0, 2, 4, 0, 4, 0, the rice blast comprehensive index is 3.75, the loss rate of spike stalk is the highest, the resistance is evaluated as medium resistance, and the four physiological races are white 173, PX079, KS-6-6, JS-49-6 resistance were all grade 3; sensation sheath blight; the incidence of stripe leaf blight was 0, immunization.
2 Cultivation techniques
"Sweet ç²³222" has a large ear shape, moderate grain density, and high yielding potential. According to its cultivar characteristics, high-yield cultivation should focus on large spikes, increase seed setting rate and increase 1000-grain weight on the basis of ensuring the appropriate number of panicles. Fertilizer operation mainly adopts the cultivation strategy of “applying sufficient base fertilizer to ensure suitable basic seedlings, promoting early development in the early stage, maintaining long-term stability in the medium term, and attacking the big ear in the later stageâ€.
2.1 timely sowing, foot hole seedlings
Master the suitable sowing date, cultivate flat and thick seedlings, and improve the quality of the seedlings, so as to achieve the effect of strong growth. Generally, it is sown around May 18, and the age is less than 30 days. The wheat is transplanted after harvesting; the planting hoe is planted around May 22, and covered with non-woven fabric, and the age is 16-18 days.
2.2 Reasonable close planting
The panicle type potential of this variety is large, the tillering is moderate, and the growth is relatively prosperous. It is suitable to use wide-row narrow planting, suitable row spacing is 13.3 cm × 26.4 cm, insert 2~3 seedlings per hole to ensure basic seedlings per 667 m2 Ten to 80,000 seedlings. The row spacing of the planted alfalfa was 12 cm × 30 cm, and more than 17,000 holes were planted per 667 m2.
2.3 Foot fat support, reasonable operation
The total nitrogen application per 667 m2 of Daejeon production is 18-20 kg, and N:P:K is 1:0.3:0.4. The optimal ratio of nitrogen fertilizer operation is pre-stage (basic fertilizer): late (spot fertilizer) = 6:4. The ear fertilizer is promoted and protected twice, and the flower fertilizer is mainly nitrogen fertilizer. It is applied when the main stem leaves are 3~3.5 leaves; the flower fertilizer is mainly high-efficiency compound fertilizer, with appropriate nitrogen fertilizer, the number of leaves in the main stem is 1 Apply at ~1.5 leaves. Apply 6 kg of urea per 667 m2 after returning to the green manure seedlings. The tiller fertilizer should be applied early, and 5-6 kg of urea per 667 m2 should be applied about 10 days after transplanting. Granular fertilizer should be applied according to the condition of the seedlings to prolong the life of the green leaves. If the leaves are dark green, they should be applied less or not. At the same time, the weather can be fertilized, and it is not suitable for fertilization in continuous rainy days.
2.4 scientific water management
In the case of transplanting, water is used to reduce plant damage. Shallow water promotes tillering. When the number of tillers reaches the predetermined number of panicles, the peak seedlings are controlled in batches to reach the appropriate group and strong individual. The dry and wet alternates in the later stage, roots and leaves, live and mature.
5 pest and disease control
Adhere to the soaking of pesticides, and prevent and cure diseases such as mite and dry nematode. In the Putian period, we will focus on the control of insects such as Laodelphax striatellus, rice locusts, and mites. Grab chemical weeding after transplanting. In the Daejeon period, in accordance with the comprehensive requirements of the plant protection department for pests and weeds, timely prevention and control, pay attention to the use of tricyclazole in the use of broken drugs to prevent the neck and neck. At the end of the heading, attention should be paid to the prevention and control of brown planthopper.
The above is the full content of the characteristics and cultivation techniques of the high-quality "Sweet Night 222". I don't know if any of the farmers' friends have actually contacted this variety. If you have one, you are welcome to share the planting techniques with others!
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