论文部分内容阅读
试验以中粳稻盐粳４号为材料，通过不同肥水运筹等处理，研究了群体茎蘖动态类型与产量的关系，结果如下：（１）根据水稻主要生育期的茎蘖苗数的消长动态变化、生长速率及其成穗率大小，可以将茎蘖动态分成４种类型，４型是合理的茎蘖动态类型。（２）合理的群体茎蘖动态，拔节期干物质重量高，拔节到抽穗期干物质重量适宜和茎鞘重量高是抽穗后群体干物质生产力高的基础
The experiment was conducted on the relationship between the dynamic type and the yield of stem and tiller population of Zhongjing japonica rice Jingjing No.4 by using different fertilizers. The results are as follows: (1) According to the dynamic change of the tiller and tiller number at the main growing stage , Growth rate and the percentage of spike formation, stem tiller dynamics can be divided into four types, and type 4 is a reasonable tiller dynamic type. (2) The reasonable stem-tiller dynamics of the population, the high dry matter weight at jointing stage, the suitable dry matter weight and the high stem-sheath weight at jointing to heading stage are the basis of high dry matter productivity after heading