How to make good grains in the later stage of rice

1. Late water management: do a good job in field water management to ensure smooth heading and flowering; After the heading, let the water layer dry naturally, and then irrigate every 5-6 days, dry and wet, to keep the soil aerated and moist, and increase the grain weight; Do not cut off the water too early during the ripening period, and generally cut off the water about a week before harvesting.

2. Prevention and control of pests and diseases: (control according to the inspection and control of pests and diseases in previous years).

1) Rice blast: spray two preventive agents for ear neck blast in advance. One at the end of booting and the other at the full heading flowering stage, with an interval of about 10 days.

Use 100 grams of 20% tricyclazole wettable powder or 60 70 ml of Fuji No. 1 emulsifiable concentrate per mu, add 50 60 kg of water for conventional spray. No medicine is used during the flowering period, and the application should be sprayed before 8 a.m. and after 4 p.m.

2) Sheath blight: It is carried out twice from jointing to full heading stage, with an interval of 7 to 10 days. The method is: 20% Jinggangmycin powder 25 grams per mu, add 10 50 kg of water to spray, must be sprayed to the stem lesions.

3) White leaf blight: In the cluster irrigation field and the white leaf blight prone area, use 20% leaf blight 75-100 grams with 50 kg of water for control.

4) Rice koji disease: the first time to control 5 7 days before the rice breaking stage, and again at the full heading stage. Choose Jinggangmycin, Hekuling, Baosuining, Tattoo Mildew and other water spray control.

5) Borer: In the rice heading stage, master the application of pesticides from the peak of egg hatching to the young larval stage. Spray 60 kg of water evenly with 5% Ruijin special 60 liters per mu. It is better to keep the shallow water layer for 3-5 days when applying.

6) Rice leaf roller: control from the peak of egg hatching to the young larval stage. Spray evenly with 60 kg of water with 80 ml of 48% Lesben EC or 60 ml of 5% Ruijinte per mu.

7) Rice planthopper: spray more than 60 kg of water evenly with 60 grams of 10% imidacloprid wettable powder or 40 grams of rice lice net (25% thiazinone wettable powder) per mu. The critical period of control is the occurrence period of the main pest generation of young nymphs. When spraying, first the field edge and then the middle.

3. Apply appropriate foliar fertilizer to increase the 1000-grain weight.

Pay attention to the prevention and control of rice blast, irrigate 3-5 cm diving once every 5 days in the paddy field of well water, and irrigate once before full maturity to prevent lodging of rice stalks from drought and death. Rice is pumped and sprayed once, and the page fertilizer is sprayed again every 10 days. Basically, the kernels can be full.

Rational irrigation and increased potassium fertilizer.