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合理密植是获得农作物高产的一项有效措施.但密植到什么程度可称“合理”,则随其它栽培条件而不同.本文就不同肥力条件,论述水稻密植下个体及群体变化规律,探讨合理密度范围,提供生产上参考.一、不同肥力、密度与分蘖的动态水稻分蘖过程,约可分为三个阶段.从开始分蘖到六月中旬为分蘖迅速发生阶段:此后到分蘖高峰期,分蘖数仍趋上升,但速度已减;高峰期后为分蘖衰退期,是时部分分蘖及主茎死亡,总分蘖数下降.
Reasonable close planting is an effective measure to get high yield of crops, but the degree of dense planting can be called “reasonable”, then it will be different with other cultivation conditions .This paper discusses the variation rules of individuals and groups under close planting density and discusses the reasonable density Range, to provide the production of reference.First, different fertility, density and tillering dynamic tillering process of rice, can be divided into three stages.From tillering to mid-June for the rapid occurrence of tillering stage: After tillering peak, tillering number Still rising, but the speed has been reduced; After the peak period of tillering decline, is part of the tillering and main stems died, the total tiller number decreased.