摘要
以北丰—14为供试品种,采用五因素三水平实施方案,系统的研究了大豆在不同密度、施肥量处理下,各器官磷素含量和对磷素的吸收规律。结果表明:随着生长发育进程的推进,大豆各器官磷素浓度大小因器官而异,均呈下降趋势;大豆对磷素最高吸收速率出现在结荚至鼓粒期,最高吸收速率为5.28mg/株.d,吸收量约占全生育期总吸收量的30%-50%左右;适宜密度和氮磷钾适量配施,可显著提高大豆磷素的吸收量与吸收速度,并能显著提高大豆的经济产量。
The experiment studied phosphorus concentration in each soybean organ and the law of phosphorus absorption under different densities and fertilizer treatments, taking Beifeng-14 as test variety and adopting 5 factors and 3 levels treatment. The results were as following： As growing of soybean, the phosphorus concentration in different soybean organ were all descend- ing; The largest absorption rate appeared form pod-setting to pod-filling, which was 5.28mg/d individual plant, occupied 30% -50% of the whole growth period absorption; suitable density and the mixture of nitrogen- phosphorus-kalium could increase the phosphorus absorption amount and rate, and also the soybean yield.
出处
《大豆科学》
CAS
CSCD
北大核心
2007年第1期30-35,共6页
Soybean Science
基金
内蒙古自治区"九五"重大科技攻关课题(960101)资助
关键词
大豆
磷素
肥料
Soybean
Phosphorus
Fertilization
