High-quality pollution-free rice cultivation techniques

1. Optimized Formula Fertilization is one of the major controllable cultivation factors that affect rice quality. The cultivation of high-quality rice requires medium and above-ground fertility levels to achieve both high yield and high quality. Fertilizer management, base, topdressing fertilizer ratio of 5 ~ 6:5 ~ 4; basal fertilizer mainly organic fertilizer, nitrogen, phosphorus, potassium, and silicon, especially the appropriate ratio of nitrogen and potassium, appropriate make-up molybdenum, sulfur, Magnesium, zinc, manganese and other trace elements. For fertilization methods, attention should be paid to the application of late-stage spike and grain fertilizers to improve the quality, appearance quality and protein content of milled rice. Fertilizers must be applied according to an optimized formula, mainly organic fertilizers, so that a sufficient amount of organic matter is returned to the soil in order to maintain or increase soil biological activity. The ratio of organic nitrogen to inorganic nitrogen is preferably 1:1. Fertilizer disinfects nitrate nitrogen fertilizer. The last topdressing must be carried out within 30 days before harvest. Foliage top dressing is completed 20 days before harvest. Organic fertilizer must be fully decomposed and urban waste should be fully decomposed. Both sludge and sludge have to be harmless before they can be applied. 2. The appropriate method for irrigating high-quality rice with water is to ensure the supply of water and adopt the “Preserving the Seedling and Feeding the Old Irrigation Law”. That is to say, there is water in combination with lutian in the early stage, and re-lighting in the late stage of the tiller. During the booting stage, there is an aqueous layer in the field, and there is water intermittently during the grain filling period. The condition of the previous soil ventilation was good, the medium-term light field, and the later water supply was old. To effectively control the highest stem seedlings within 1.2 to 1.3 times the number of effective panicles, and to take the 80 to 90% of the expected number of panicle seedlings when the dry seedlings are used to control the seedlings. Not only is it helpful to increase the rate of spike formation, but it is also more conducive to preventing the group from becoming too large and leading to aggravation of pests such as sheath blight, thereby leading to an increase in the use of pesticides. In particular, in the late rice and single late rice areas in our province, drought often occurs late in the season, and most of the varieties used are large spike-type varieties. Early water shortage in the later period is the main factor affecting rice quality. 3. Comprehensive prevention and control of diseases, weeds and weeds The prevention and control of pollution-free pests and diseases must adhere to the principle of “prevention-based, comprehensive prevention and control” and advocate biological control and the use of biological and biological pesticides for prevention and control. Strictly control the use of chemical pesticides and plant growth regulators. It is strictly prohibited to use highly toxic, highly toxic, high-residue or pesticides with "triple causes" (carcinogenic, teratogenic, and mutagenic), such as organic chlorine, organophosphorus insecticides, and organically grown plant growth regulators. The prevention and control of weeds should adopt comprehensive prevention techniques and minimize or minimize the use of chemical herbicides. The pest prevention and control strategy is based on early prevention, accurate measurement, use of biological pesticides in the later period, minimizing the use of drugs, and adopting ultra-low-capacity, low-volume spraying technology to reduce pesticide residues. The last medication should be taken 30 days before harvest to ensure Rice health quality, to achieve pollution-free standards. According to relevant regional practice, rice seeds can be seeded with imidacloprid, which can effectively prevent and control the hazards of rice thrips and rice planthoppers in rice seedling stage, and replace the traditional habit of carbofuran sulfate. The seedlings can be used once before transplanting. Effective control of the green-backed stem borer and rice leaf roller, the use of biological pesticide Sutrion in the prevention and control of stem borer, the use of eggs before hatching, young age before peak, instead of the conventional pesticide triazophos; rice leaf roller control Poison deterrence (or chlorpyrifos) can be used instead of highly toxic pesticides methamidophos; control of rice planthoppers can be used imidacloprid pesticides, instead of the commonly used dimethoate, dichlorvos; control of rice smut, panicle blast in the election before the rice break 5 For 7 days, Tricine and Triadimef were used to prevent the use of Triconazole and Triadimefine in rice heading. After replacing these low-toxicity and high-efficiency pesticides, the organic phosphorus content of rice will be greatly reduced. China Agricultural Network Editor