At present, the enthusiasm of farmers for growing grain is very high. Some farmers' friends think that the more fertilized the field, the higher the yield. On June 10, the station's Soil and Fertilizers Workstation Xie Weiguo reminded farmers of this situation: Do not blindly feed more fertilizer. Xie Weiguo pointed out that the demand for fertilizers of any kind of crop has a degree: Insufficient or excessive amounts will affect crop growth, crop yield, and severity of pests and diseases. For example, rice lacks nitrogen, the whole plant color is light, the lower position leaves are dry, the rice plant is short, and there is little tillering and premature failure. If there are too many nitrogen fertilizers, the rice plant will grow longer, the glutinous green lodging, ripening delay, and empty grains increase. Under high-yielding conditions, rice needs to absorb 2.1-2.4 kg of nitrogen (n), 0.9-1.3 kg of phosphorus (p2o5), and 2.1-3.3 kg of potassium (k2o) per 100 kg of rice. The nitrogen uptake of conventional rice is higher than that of hybrid rice, while that of hybrid rice is higher than that of conventional rice. The amount of phosphorus uptake is basically the same. Rice still needs a large amount of silicon crops, the body of silicon content usually accounts for 11% to 20% of the total dry matter, so production should pay attention to the application of silicon fertilizer in rice. Xie Weiguo suggested that late rice should be fertilized with the method of “previously promoting central controlâ€. Generally, about 17 days after transplanting, rice will have a strong absorption peak, and 70% to 80% of the fertilizer should be applied in the early stage. Late rice generally returns 200-300 kilograms of straw per acre, applies 40-50 kilograms of ammonium bicarbonate, and 15 kilograms of 25% compound fertilizer as a base fertilizer; topdresses 5 kg of urea and 10 kg of potassium chloride 6 to 7 days after transplanting. Fertilizers were used as fertilizers; rice was sprayed with 0.1% to 0.5% potassium dihydrogen phosphate once at the booting stage.
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