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1 理论基础水稻的产量是由每穴穗数、每穗粒数、结实率、粒重4个因素构成。要夺得水稻高产,就必须围绕提高这四个要素的数值,采取相应措施,促进其协调发展。水稻经济产量的95%以上来自光合产物,即空间营养,百分之几来自土壤营养和施肥。也就是产量的95%以上来自二氧化碳和水,不到5%来自土壤。所以要提高水稻产量,主要是提高光合产物,即空间营养。
1 Theoretical basis Rice yield per spike per panicle, grain number per spike, seed setting rate, grain weight of 4 factors. To win the high yield of rice, we must take measures to promote the coordinated development of these four elements by raising the value of these four elements. More than 95% of the economic output of rice comes from photosynthetic products, namely space nutrition, and what percent comes from soil nutrition and fertilization. That is more than 95% of production comes from carbon dioxide and water, less than 5% from the soil. Therefore, to increase rice production, mainly to improve photosynthetic products, namely space nutrition.