One should pay attention to the application of organic fertilizer. Organic manure contains various nutrients, which can improve the characteristics of soil aeration, absorption of fertilizers and water retention, and promote the steady growth of rice plants to obtain high yield and quality. Organic fertilizer is mainly used as a base fertilizer, 30 to 40 tons of Mushi composted miscellaneous fertilizer, or 30 to 40 kg of cake fertilizer, and 40 to 50 tons of human and animal manure can be applied before ploughing. ?
Second, pay attention to control nitrogen fertilizer. Over-application of nitrogen fertilizer in rice will not only increase the number of ineffective tillers, turn green, lodging, and increase pests and diseases, leading to more empty grains, lower seed setting rate, and affecting rice yield. Nitrogen fertilizers are mainly used as topdressing fertilizers. After the first rice planting, 6-7 kg of urea is applied in the Mushi, and the second time in the 13-15 days after the planting, the paddy field is used, and the Mushi urea is 4-5 kg. Strong and strong. Pay attention to the drainage control fertilizer in the medium term, and only apply some balance fertilizer to the poorly growing type II and III seedlings as appropriate, and see 3-4 kg of grain fertilizer in the later period. ?
Third, we must pay attention to the application of phosphorus and potassium fertilizers. Phosphorus and potassium fertilizers can increase the vitality of plants, promote the synthesis and operation of nutrients, strengthen photosynthesis, extend the functional period of the leaves, make the grain full and full, and increase the yield. Phosphorus fertilizer is suitable for basal fertilizer, and potassium fertilizer is better. In the sufficient amount of organic fertilizer, 20-40 kg of phosphate fertilizer is applied per mu, and 3.5-5 kg ​​of potassium chloride may be topdressed per mu before delivery. Late spraying of phosphorus and potash fertilizer can promote grain filling. In the late stage of heading and flowering, and spraying at the grain filling stage, 50-100 grams of phosphorus and potassium fertilizer are used for each acre, and 50-60 kg of water is sprayed in the evening. ?
Fourth, we must pay attention to increase fertilizer. Zinc fertilizer and silicon fertilizer can not only improve the supply of oxygen in rice roots, enhance the resistance and lodging resistance of rice plants, increase the disease resistance of plants, promote the development of root system in the later period, prolong the functional period of leaves, prevent premature aging, but also accelerate the development of flowers. , Increase the number of pollen, promote flower bud germination, is conducive to raising the rate of rice spikes; but also can promote large panicles, improve seed setting rate and grain filling degree, increase rice yield.
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