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水稻阶段施氮,在华东一季稻区已有详细的研究分析,认为必须施用足够的基肥外,应抓住在分蘖前期和幼穗分化期进行追肥:分蘖前期追肥,对形成穗数多少和穗的整齐度有关;幼穗分化期追肥,对形成穗的大小、小穗多少以及穗重、粒数等有关。又宜春、萍乡一带,群众在生产实践中,一般在二耘后,检查禾苗分类排队进行追肥,以消灭第三类禾,起到了很显著的增产作用。因此,在双季间作稻改连作稻地区,为了巩固改制,研究解决早
In the rice stage, nitrogen application has been studied and analyzed in the first quarter of East China. It is considered that enough basal fertilizer must be applied. At the early stage of tillering and panicle differentiation, top dressing should be seized: The uniformity of the panicle; young panicle top dressing, the size of the formation of spikes, spikelets and the number of spikes, grain number and so on. And Yichun, Pingxiang area, the masses in the production practice, usually in two Yun, check the classification of seedlings in line to dressing fertilizer to eliminate the third category Wo, played a significant role in increasing yield. Therefore, in the double season for rice to make even rice areas, in order to consolidate the restructuring, research to solve the early