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Reasonable use Adhere to the principle of “four more than four lessâ€. That is, Tian Duo Shi, which contains less potassium, is less applied; early rice is applied more, late rice is less applied; high stalks are applied more, dwarf stalks are less applied; hybrid rice is more applied, and conventional varieties are less applied. Tests show that: 7.5 ~ 10 kg of potassium chloride per mu, the greatest economic benefit.
Appropriate fertilization Rice requires the most potassium in the tillering stage and the panicle differentiation stage. Potassium fertilizer is applied once, preferably in the tillering stage; for two applications, it should be applied in the tillering stage and the panicle differentiation stage.
In combination with the application of potassium, phosphorus and nitrogen should be combined to achieve full effect. Generally, the ratio of nitrogen, phosphorus and potassium is preferably 1:0.5:1.2.
Lime-based potassium chloride or potassium sulfate is a physiologically acidic fertilizer that can cause acidification of the soil if used for a long time. Therefore, it is necessary to apply lime as appropriate to neutralize the acidity of the soil to facilitate rice growth.
Rice potash fertilizer four attention
Potassium fertilizer in rice can achieve significant yield increase. Because potassium is sufficient to enhance photosynthesis, promote sugar synthesis and accumulation, improve plant resistance, enhance rice root respiration, promote nitrogen uptake and protein synthesis, and make plants full of grain, high yield and stable yield. However, the following four points must be noted when applying potassium fertilizer:
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