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水稻产量是由穗数、实粒数,千粒重三者构成的.水稻栽培的过程,就是穗数、粒数、粒重形成的过程.单季晚稻的穗、粒、重是在分蘖、长粗、长穗三个不同时期形成的.这三个阶段既是相互联系的,又是相互制约的,前者是后者的基础,后者是前者的发展.因此,只有足蘖,才能多穗;只有壮秆,才能穗大粒多.如果穗数过多,每穗粒数往往减少.颖花数过多,结实率也会降低.所以对单季晚稻的栽培应注意协调前、中、后期的生长,解决群体与个体以及穗、粒、重间的矛
The rice yield is composed of the number of spikes, the number of grains and the weight of 1000. The process of rice cultivation is the process of spike number, grain number and grain weight. , The long spike formed in three different periods.These three stages are interrelated and mutual restraint, the former is the basis of the latter, and the latter is the development of the former.Therefore, only the tiller can be more spike; only Strong stalk, to spike large grain more .If the spike number is too large, the number of grains per spike tends to decrease .Will the number of spikes is too much, the seed setting rate will be reduced .Therefore, the cultivation of single season late rice should pay attention to coordinate the growth of the early, middle and late , To solve groups and individuals as well as spike, grain, heavy spear