Hybrid late rice has the advantages of large spikes and large tillers, and the yield is 20%-30% higher than that of conventional varieties. High yield is achieved by tillering into ears, and the demand for fertilizer is large. Due to the high temperature in the early stage of production, the fertilizer is easily decomposed and utilized. The temperature gradually decreases in the later stage, the fertilizer decomposes slowly, the soil fertility is weakened, and the pre-fat and premature aging are prone to occur, which affects the development of ear grain. Therefore, it is necessary to obtain high yield of hybrid late rice. Pay attention to skills, develop strengths and avoid weaknesses, in order to give full play to the potential for increased yield of hybrid late rice.
Increase the application of potassium fertilizer. The application of potassium fertilizer in hybrid late rice can enhance the ability of water absorption, water absorption and tillering of roots, improve the resistance of stems to disease and disease, accelerate the transport and transformation of nutrients in rice plants, and make the tillering rate significantly. Increase, the number of kernels per spike and 1000-grain weight increase. According to the experiment of the agricultural technology department: in the process of growth and development of hybrid late rice, if 35 kg of ammonium sulfate is applied per mu, 22 kg of superphosphate and 22 kg of potassium chloride should be applied to satisfy the nutrients such as nitrogen, phosphorus and potassium. Need.
Early application of manure. Early-stage ploughing and early topdressing, usually 5-7 days after the insertion, the topdressing to promote early tillering, this topdressing generally accounts for 20%-25% of the amount of fertilizer. This time, the tiller fertilizer should be based on nitrogen fertilizer, phosphorus and potassium fertilizers combined, and insufficient base fertilizer, and sufficient base fertilizer. After grasping the application, combined with cultivating the field, the mud and fertilizer can be mixed. Generally, 7-10 kg of urea per acre or 25 kg of ammonium bicarbonate is used as the split fertilizer. Use ammonium bicarbonate as a split fertilizer, and insist on using the method of mixing fine soil in the evening, and inject 3-5 cm of water in the field to prevent burning. After 7-10 days, depending on the growth of the seedlings, the fertilizer can be applied to the seedlings with poor growth potential. Hybrid rice is sensitive to water. After returning to green, it can be used to delay the field to promote roots. After shallow water, it can be fertilized by water, and when it is high temperature, it can be properly tempered by deep water to promote the multi-split.
Look at Miao Qiao application of panicle fertilizer. The peasant farmers are called sturdy fat. Rice panicle fertilizer can be divided into flower-promoting fertilizer and flower-preserving fertilizer according to the different application period. For late hybrid rice fields with insufficient base fertilizer, less tillering, poor growth, and insufficient seedling number, the flower-promoting fertilizer can be applied at the beginning of the young panicle differentiation (ie, when the third last leaf is just exposed), which can promote branching and floret Differentiation, increase the number of branches and spikelets per spike.
Apply a broken fat. The cross-cutting fertilizer of late hybrid rice (also known as granular fertilizer) should be applied at the beginning or early stage, mainly to increase the late vigor of late hybrid rice, prevent premature aging, increase grain weight, and if the leaf color fades at the beginning stage, each Mu should apply 2-3 kg of urea, 2 kg of potassium chloride, or spray 1% urea solution and 0.2% potassium dihydrogen phosphate solution twice, each time 7-8 days apart, spray fertilizer 60 About kilograms. After the hybrid late rice is normal, the leaf color is normal. Spraying 0.2%-0.25% potassium dihydrogen phosphate solution 2-3 times on the leaf surface can promote the operation and transformation of nutrients into the grain to prevent late maturity.
Increase the application of potassium fertilizer. The application of potassium fertilizer in hybrid late rice can enhance the ability of water absorption, water absorption and tillering of roots, improve the resistance of stems to disease and disease, accelerate the transport and transformation of nutrients in rice plants, and make the tillering rate significantly. Increase, the number of kernels per spike and 1000-grain weight increase. According to the experiment of the agricultural technology department: in the process of growth and development of hybrid late rice, if 35 kg of ammonium sulfate is applied per mu, 22 kg of superphosphate and 22 kg of potassium chloride should be applied to satisfy the nutrients such as nitrogen, phosphorus and potassium. Need.
Early application of manure. Early-stage ploughing and early topdressing, usually 5-7 days after the insertion, the topdressing to promote early tillering, this topdressing generally accounts for 20%-25% of the amount of fertilizer. This time, the tiller fertilizer should be based on nitrogen fertilizer, phosphorus and potassium fertilizers combined, and insufficient base fertilizer, and sufficient base fertilizer. After grasping the application, combined with cultivating the field, the mud and fertilizer can be mixed. Generally, 7-10 kg of urea per acre or 25 kg of ammonium bicarbonate is used as the split fertilizer. Use ammonium bicarbonate as a split fertilizer, and insist on using the method of mixing fine soil in the evening, and inject 3-5 cm of water in the field to prevent burning. After 7-10 days, depending on the growth of the seedlings, the fertilizer can be applied to the seedlings with poor growth potential. Hybrid rice is sensitive to water. After returning to green, it can be used to delay the field to promote roots. After shallow water, it can be fertilized by water, and when it is high temperature, it can be properly tempered by deep water to promote the multi-split.
Look at Miao Qiao application of panicle fertilizer. The peasant farmers are called sturdy fat. Rice panicle fertilizer can be divided into flower-promoting fertilizer and flower-preserving fertilizer according to the different application period. For late hybrid rice fields with insufficient base fertilizer, less tillering, poor growth, and insufficient seedling number, the flower-promoting fertilizer can be applied at the beginning of the young panicle differentiation (ie, when the third last leaf is just exposed), which can promote branching and floret Differentiation, increase the number of branches and spikelets per spike.
Apply a broken fat. The cross-cutting fertilizer of late hybrid rice (also known as granular fertilizer) should be applied at the beginning or early stage, mainly to increase the late vigor of late hybrid rice, prevent premature aging, increase grain weight, and if the leaf color fades at the beginning stage, each Mu should apply 2-3 kg of urea, 2 kg of potassium chloride, or spray 1% urea solution and 0.2% potassium dihydrogen phosphate solution twice, each time 7-8 days apart, spray fertilizer 60 About kilograms. After the hybrid late rice is normal, the leaf color is normal. Spraying 0.2%-0.25% potassium dihydrogen phosphate solution 2-3 times on the leaf surface can promote the operation and transformation of nutrients into the grain to prevent late maturity.
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