摘要
总结了１９８８～１９９０年３年的攻关试验结果，提出了黔中地区杂交水稻制种稳产高产的技术体系。使该区制种平均单产由５０～８０ｋｇ提高到１５０ｋｇ，最高亩产达３０６ｋｇ。
The
yield of hybrid rice seed production in the central area of Guizhou,the southwesternprovince in
China,has been low at 750～1200kg/ha due to high elevation and low temperature.Through a
3-year cooperative research from 1988 to 1990,the stably high yielding seed production
techniques for thisarea were developed:(1)seeding a little earlier and raising seedlings in
greenhouses by the two-stepmethod to make the parents flower under favourabe climatic
condition;2)adopting the″One-Heavy-Two-Light″ fertilizing technique to establish high
yielding population structure;( 3 ) assuring good sychroniza-tion of flowering between parents
and increasing the dosage of GA3 sprayed(225～270g/ha);(4)integratedlycontrolling disease
and pests. Since the techniques were applied in the area,the yield of hybrid rice
seedproduction has been raised to 2250kg/ha with the highest up to 4590kg/ha.
出处
《杂交水稻》
CSCD
北大核心
1994年第6期15-17,24,共4页
Hybrid Rice
关键词
杂交水稻
水稻
制种
技术体系
气象条件
hybrid rice seed production
climatic conditions
high yielding techniques
