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Rational fertilization: Single-cropping hybrid late rice requires large amount of fertilizer, and generally applies 50 kg of ammonium bicarbonate, 30 kg of superphosphate, and 10 kg of potassium chloride to basal hybrid late-season rice; After Survival turns green (3-5 days after transplanting), mu is used. Urea 12-15 kilograms mix 30% butyl benzyl herbicide 100 grams of applicator for topdressing and weeding; after field rehydration, see seedling supplement urea 3-5 kg. The specifics should be based on the soil fertility conditions to prevent the partial application of nitrogen fertilizer.
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To prevent lodging: to prevent single-season hybrid late rice lodging, we should do a good job on the basis of rational fertilization: First, timely put down the field, that is, from the end of rice till the early stage of young spike differentiation, drain the field water and put aside the fields. Poor soil, poor drainage, adequate fertility, green rice seedlings, and vigorously growing fields must be re-entered to promote soil solidification. The roots of rice plants should be tied down underneath, and the stems should be thick and the leaves should stand upright. Wet irrigation is used during the grain filling period to dry wet and dry, and it is lightly put on many occasions. The second is prevention and treatment of pests and diseases, especially the diseases and worms at the base of rice straw, including sheath blight and rice planthoppers.
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Disease prevention and pest management: The main diseases of single-season hybrid late rice include rice blast disease and sheath blight, etc. The pests mainly include aphids (benzilla), beetles (rice fly aphids, floating dust seeds), and rice leaffolders, etc. Prevention.
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Scientific irrigation: Single-season hybrid late rice should be water-filled during the returning green period and heading and flowering period. The remaining period should be filled with water according to the principle of "leaves, groundwater, wet, wet and dry". Long-term irrigation of deep water should not be used to prevent serious disease occurrence and Caused lodging. It is not too early to shut off the water in the later period, and it is generally advisable to cut off the water 7-10 days before harvest to prevent the production of dried stalks.
Field Management of Single Season Hybrid Rice
In mid-June, the transplanting season for single-season hybrid late rice is transplanted. On the basis of timely sowing and breeding, we must make the single-season hybrid late-season high quality and high yield, and the following points should be made in the production of Datian: