构成水稻产量的因素是每亩穗数、每穗平均粒数、结实率及粒重。掌握各产量构成因素的形成规律,合理运用施肥措施,是争取水稻丰产的关键。农业生产条件极其复杂,肥料数量有多有少,在不同肥量水平下,肥料如何合理运筹,才能获得相应较高的产量,这是生产实践上急待解决的问题。有鑑于此, The factors that make up rice yield are the number of panicles per acre, the average number of grains per panicle, the seed setting rate and grain weight. Grasp the formation of the factors that form the yield, rational use of fertilization measures, is the key to winning high yields of rice. The conditions of agricultural production are extremely complicated and the quantity of fertilizers is more or less. Under different levels of fertilizers, how can fertilizers be rationally applied in order to obtain correspondingly higher yields? This is an urgent issue in production. In view of this,