摘要
１９９２～１９９４年在江苏地区多点试验，结果表明：适当降低基蘖肥用氮量，增加穗粒肥用量（穗粒肥占总施氰量的４０％～５０％），并适当提早搁田期（当群体茎蘖数达７０％～８０％时搁田），能控制无效分蘖生长，有利于促进有效蘖的生长，稳定穗数，提高成穗率，增加每穗总粒数，协调穗粒关系，穗数和大穗得到统一，提高单位面积总颖花量，并能提高抽穗期叶面积指数和有效叶面积率，提高抽穗期群体单茎茎鞘重，改善群体冠层结构，延长抽穗后功能叶的寿命，提高抽穗后的群体光合效率而获得高产。
By
experiments in Jiangsu areas for 3 years,the results are as follows: Reduce the quantity
ofbase-tillering ferlilizer applied properly and increase the quantity of ear-grain fertilizer
applied.(When ear-grain fertllizer is the 40～50 per cent of amounts of N-fertilizer
applied),drying paddy field in advance prop-erly(when the number of stems and tillers come to
the 70～80 percent,drying paddy field starts).This cancontrol the inefficient tiller growing and
be favourable to improve the effective tiller growing, steady the num-ber of ear,improve the
tillering percentage,increase the number of grains per ear and ccordinate the relation-ship of
ear and grain so that the number of ears and larger ears are collaberate.It improves the number
of to-tal spikelets,the LAI of the heading poried,the effective leaf area percentage the
single:stem and sheathweight of populatlon at heading and it is favourable to improvement of
canopy structure,the prolongation ofthe function leaf life and the elevation of photosynthetic
efficiency after heading to chieve high yield .
出处
《江苏农学院学报》
CSCD
1995年第3期21-30,共10页
Jiangsu Agricultural Research
基金
江苏省"八五"重点
