摘要
研究滴灌大豆的干物质积累规律。设置295mm、345mm、395mm、445mm4个不同的灌水处理,1个沟灌处理为对照。对各处理的大豆株高、干物质积累、叶面积指数(LAI)、群体生长率(CGR)等参数进行分析。结果表明:大豆株高随灌水量的增加而增加,LAI、CGR等随灌水量的增加而增加。滴灌大豆净同化率(NAR)在鼓粒期之后,随灌水量增加而降低;滴灌比沟灌更利于大豆干物质积累,在大豆生育期内较适宜的滴灌灌溉定额为395mm～445mm。
To investigate the effect of irrigation amount on drip irrigation soybean,four irrigation treatment of 295 mm,345 mm,395 mm and 445 mm were used with turrow irrigation as comparison, and the growth traits of plant height（PH） , leaf area index （ LAI ）, crop growth rate （ CGR ） and net assimilation rate （NAR） were determined. PH, LAI and CGR increased with the increasing of irrigation amount. After seed filling, NAR decreased with increaseing of irrigation amount. Results suggest drip irrigalion is beneficial for dry matter accumulation than furrow irrigation, anti the suitable irrigation amount is between 395 mm and 445 mm during whole growth stage.
出处
《大豆科学》
CAS
CSCD
北大核心
2009年第2期247-250,共4页
Soybean Science
关键词
滴灌
大豆
干物质积累
生理参数
Drip irrigation
Soybean
Dry matter accumulation
Physiological parameters
