Zatian
After the transplanting, the field should be checked in time, and the seedlings should be used in a timely manner to make up for the seedlings to ensure the seedlings. After the replanting, the surplus seedlings in the field must be cleared in time so as not to affect the normal fertility of other rice.
Scientific fertilization
Due to the large area of ​​high-quality late-maturing rice varieties, it is necessary to control the amount of nitrogen fertilizer application, to reduce the use of nitrogen fertilizer, and to increase the application of phosphorus and potassium fertilizers. The fertilization ratio of nitrogen, phosphorus and potassium in the general growth period is 1:0.5:0.5, which means 8-10 kg of pure nitrogen, 5 kg of phosphorus, and 5 kg of potassium. Before the heading date, Huimanfeng liquid fertilizer can be sprayed twice to supplement trace elements, regulate nutrient balance, enhance stress resistance, and increase rice yield and quality.
Water Saving Irrigation
To adopt alternate water-saving irrigation methods with shallow moisture and dry water, according to the growth of rice seedlings, flexible adjustment of the irrigation period, not only improve the irrigation efficiency, but also increase the ground temperature, water temperature and soil permeability, enhance soil fertility, oxygen supply capacity, realize the festival Increase water production. In the well irrigation area, water temperature should be increased through the installation of drying pools, extension of channels, and membrane coating. Conditioned gravity irrigation can be surface water irrigation. Accelerate the growth of rice and prevent late-maturing lust and reduce production.
1. After returning green, maintain a shallow water layer of about 3 cm, increase the water temperature and the ground temperature, accelerate the transformation of soil nutrients, and promote the delivery. At the end of the term of birth, it should be sunk into the water and control the invalid childbirth.
2, booting to heading, flowering, protecting and attacking panicles, mainly attacking large spikes. Keep shallow water and not be short of water. In case of low temperature below 17°C, fill 10-15cm deep water, return to normal water layer after low temperature.
3, mature root protection leaves. Perform shallow, wet, dry alternate irrigation to prevent drought. The wet period is mainly wet, and the dry period is mainly dry during the milking period and stopped during the yellow ripe period.
Chemical weeding
After the rice is transplanted and turned green, benzalkonium, pretilachlor, bensulfuron-methyl, ethametsulfuron can be sprayed. For resistance to weeds such as Alisma orientalis, Sagittaria similis and other resistant weeds, deep plowing and deep plowing measures should be adopted first. The chemical control can be treated at the end of rice tillering, drained with water, and then treated with scutts of red spider mites (2A-4-chlorosulfachlor). For controlling weeds such as rice bran, stalked bentgrass, and rice larvae, we can use cyhalofop- butyl, penoxsulam, and pyrimethamine to treat stems and leaves. For the prevention and control of grass weeds, we can use pyrazosulfuron-methyl, bensulfuron-methyl, pyrimidazosulfuron-methyl, and sulfosulfuron-methyl and other agents to control the application twice after transplanting greens and in front of exposed water.
Pest control
Insect protection: Control Honda leaf miner: Before transplanting or returning green, or during the peak period of egg laying, spray 3% acetamiprid or 5% dromatic nitrile insecticide to prevent and cure. Prevention of Scutellariae: In the tillering stage, the rate of dry sheath strain reached 3%, and the number of egg blocks per acre reached 50 in the late booting stage to the heading stage, and was treated with buteneflurane cyanide at the peak of egg hatching.
Prevent disease: Strengthen rice field management, scientific fertilization, and avoid excessive nitrogen fertilizer application to reduce the risk of large-scale epidemic of rice blast disease. Prevention and control of rice blast disease focus on the prevention of leaf blast and ear blast in the period from tillering to heading. The occurrence of acute lesions in the field during the onset of the disease or the center of the disease when the implementation of chemical control, breakage heading application of panicle blast prevention. Promote the use of high-level single-dose pesticides, avoid the use of low-level compounding agents, optional Shi Bao Ke, Fuji No. 1 and other control agents.
Perennial Precooking
Under the premise of ensuring the safety and maturity of various conventional measures, mainly nitrogen-containing fertilizers such as amino acids and humic acids are sprayed on the vegetative growth stage, and potassium-containing foliar such as potassium dihydrogen phosphate is sprayed on the reproductive growth stage. Fertilizers promote growth and ensure safe maturation.
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