摘要
研究了施氮量、施钾量及栽插密度对一季稻两优培九的群体动态及产量的影响。结果表明 :在栽插密度为每公顷 2 5万穴的条件下 ,氮肥的适宜用量为 2 2 5kg/hm2 左右 ,钾肥的用量应在 2 85kg/hm2 左右 ;为了保证足够的穗数 ,施氮量在每公顷 2 2 5kg的条件下 ,总株数应在 3 3万穴左右。同时就超高产水稻的源库关系及叶面积指数、干物质积累等因素对产量的影响作了初步的探讨。
In this article, the effects of transplanting density and the application amounts of nitrogen & potassium fertilizers on developing mass and yield of single-season rice “Liangyoupeijiu” are studied. The results show that the most profitable applying amount of N-fertilizer is about 225kg/hm 2 and that of K-fertilizer is about 285kg/hm 2 when the transplanting density is 250000 holes per hectare; and the total holes per hectare is about 330000 when the applying amount of N-fertilizer is 225kg/ hm 2 in order to get enough number of panicles. At the same time, the effects of relationship between source and sink, LAI and the accumulation of dry matter on yield of super High-yielding hybrid rice are discussed.
出处
《江西农业大学学报》
CAS
CSCD
2003年第3期325-330,共6页
Acta Agriculturae Universitatis Jiangxiensis
基金
江西省重点科技攻关项目
