摘要
暗垄密是大豆产栽培技术,与对照相比单产平均增加20%,为了探讨其增产机理,对暗垄密群体内田间小气候变化进行了调查,结果表明:暗垄密群体前期比对照封垄早(提前10d),后期衰落慢,提高了光能利用率;两种栽培模式生育中期冠中层及冠下层(冠内地表)的光照强度均较低,冠层内的通风性差异不明显;暗垄密群体耕层土壤的保水力较强。
The yield of soybean cultured with technique of hidden ridge close planting was increased by 20%. For approaching mechanism of high-yield in this planting model, microclimate in field was investigated. The result was showed that time of sealing ridge was earlier and efficiency of energy conversion has been increasesd in hidden ridge close planting model; The ventilation capacity of the shoot layer had a little of change between. Storage-watercapacity of the plough layer was increased.
出处
《黑龙江农业科学》
2004年第1期28-29,共2页
Heilongjiang Agricultural Sciences
关键词
大豆
栽培模式
暗垄密
田间小气候
soybean
planting model
hidden ridge close planting
microclimate in field
