不同水分处理对滴灌大豆干物质积累及生理参数的影响

研究滴灌大豆的干物质积累规律.设置295 mm、345 mm、395 mm、445 mm 4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)、群体乍长牢(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、CCR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395 mm～445 mm.

Effect of Different Drip Irrigation Treatments on Dry Matter Accumulation and Physiological Parameters in Soybean

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 furrow 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 irrigation is beneficial for dry matter ac...