摘要
采用大田试验方法,设置2种密度（28、33万株.hm-2）,研究以缓释氮肥为核心的优化施肥对大豆群体质量的影响。在大豆主要生育期取样,测定了叶面积和各器官的干物质积累量等项指标。结果表明,R6期,优化施肥的叶面积指数在低密度条件下提高9.0%,高密度条件下提高17.6%,均达到5%显著水平。在高密度条件下,R4~R6期优化施肥处理的净同化率提高33.0%,达到1%显著水平,R8期植株干重提高16.5%,达1%显著水平,株粒数提高14.0%,株荚数提高4.76%,产量提高10.6%,均达5%显著水平。
Samples were collected in major growth stages,and leave area as well as dry matter accumulation and so on was determined.The results showed that LAI of optimized fertilization treatment was higher by 9.0% under low density and by 17.6% under high density at R6,respectively（P0.05）.Net assimilation rate of optimized fertilization treatment increased 33.0% during R4 to R6（P0.01） under high density.Meanwhile the dry matter weight increased 16.5%（P0.01） with values of seeds per plant,pods per plant and yield increased by 14.0%,4.76% and 10.6%（P0.05）,respectively.
出处
《东北农业大学学报》
CAS
CSCD
北大核心
2012年第8期110-113,共4页
Journal of Northeast Agricultural University
基金
哈尔滨市科技攻关项目(2008AA6CN040)
东北农业大学创新基金
关键词
大豆
优化施肥
群体质量
产量
soybean
optimized fertilization
population quality
yield
