论文部分内容阅读
通过对穗发育过程进行不同时期供氮处理,探讨促花与保花在增产中的作用,结合生产田产量结构调查分析,为汕优63的高产施肥技术提供依据。试验方法稻苗在本所网室里采用盆栽。苞分化后第一天起,每三天供氮一次,至破口期结束,计设11个供氮期处理(即苞分化后第1、4、7、10……31天)。每处理三盆,另设取样钵三盆。盆钵用的土壤含有机质1.4808％,全氮、磷、钾分别为0.0843％、0.0360％、4.0831％,含水解氮87.50PPm、速效磷125.25PPm、速效钾70.00PPm,
The effects of promoting flowers and preserving flowers on yield increase were discussed through analyzing the process of ear development and nitrogen supply at different periods. Based on the investigation of yield structure in production fields, the results provided the basis for high yield fertilization techniques in Shanyou 63. Test methods Rice seedlings in the net room using potted plants. From the first day after bud differentiation, the nitrogen supply was applied once every three days to the end of the breach period. Eleven nitrogen-supplying treatments (ie, 1,4,7,10 ... 31 days after budding) were set. Each treatment of three basins, set up another sampling pot three basins. The contents of organic nitrogen, phosphorus and potassium were 0.0843%, 0.0360% and 4.0831%, respectively. The content of hydrolyzate 87.50PPm, available phosphorus 125.25PPm, available potassium 70.00PPm,