Wonderful fertilizers improve rice yield

Increased rice production and scientific application of fertilizers are critical. Fertilizing techniques for increasing rice yield have the following points:

First, the application of organic fertilizer: Organic fertilizer is mainly used as a base fertilizer, generally 30 to 40 tons of Mushi soil miscellaneous fertilizer, or 30-40 kilograms of cake fertilizer, can also be applied before the ploughing of human and animal manure 40-50 Tam.

Second, control of nitrogen fertilizer: excessive application of nitrogen fertilizer will not only result in increased ineffective delivery, love Qing, lodging, disease and pest intensification, but also leading to more empty grains, seed setting rate decreased, affecting rice yield. Nitrogen fertilizers are mainly used as topdressing fertilizers. Generally, 6-7 kg of urea are applied after rice is transplanted, and the second time after 13-15 days of interplanting, urea is added to 4-5 kg ​​of urea to facilitate tree growth. In the medium term, it is necessary to pay attention to controlling the water and controlling the fertilizer. Only the second and third types of seedlings with poor growth may be supplemented with some balance fertilizers as appropriate. In the later period, the seedlings will be given 3-4 kg of grain fertilizer.

Third, pay attention to the application of phosphorus and potassium fertilizer: Phosphorus base fertilizer is appropriate, potash fertilizer to pursue better. Generally, 20 kg of phosphate fertilizer is applied per acre in a sufficient amount of organic fertilizer, and 3.5-5 kg ​​of potassium chloride can be applied per acre as potash fertilizer. Late spraying of potassium dihydrogen phosphate can promote grain filling. Generally, it is sprayed once at the late stage of heading and flowering and at the grain-filling stage. Each time, each mu uses 150g of potassium dihydrogen phosphate and 50-60kg of water is sprayed in the evening.

Fourth, increase the application of trace elements: trace elements such as zinc, manganese, boron, etc., can improve the supply of oxygen in rice roots, enhance the resistance of rice plants, improve plant disease resistance, promote root development in the later period, extend the functional period of leaves, prevent Premature failure; can accelerate the development of flowers, increase the number of flower grains, promote flower buds, is conducive to raising the rate of rice spikes, but also promote the large panicles and grain size, improve the seed setting rate and grain plumpness, thereby increasing rice yield. According to tests, under the same conditions of cultivation and management measures, the application of trace element fertilizer can increase the yield by 40-50 kilograms per acre, while the production cost per acre increases by about 2 yuan.

Application of zinc, manganese, boron and other trace elements in rice is generally better when spraying twice. The first time during childbirth, the second time during the completion of spikelet differentiation. The application rates of zinc, manganese and boron fertilizers are 100-125 grams per mu, and the flushing water concentration is: zinc is one thousandth; manganese and boron are each five ten thousandths, and the leaves are sprayed on cloudy or sunny afternoons.

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