摘要
利用人工和自动气象观测仪器对不同杨粮间作模式中的小气候进行了多年观测。在观测的基础上分析了不同杨粮间作模式中光照的时空分布特征，并结合作物的产量分布，提出在间作田中要保证行中一天有８ｈ日照，杨树行距在间作５年时应为２８ｍ，１０年时应为５６ｍ，为充分利用间作初期的光能和土地资源，初植行距可为１４ｍ或７ｍ。
The insufficiency of sunshine caused by the poplar crown’s shady in intercropped fields is an important factor affecting the growth and yield of crops, and also a key problem that needs to be considered when choosing and designing the rational model of intercropping and thinning. Based on a great deal of investigation data of the microclimate in different model testing areas of intercropping of poplar with crops by manual and automatic meteorological instruments for many years, this paper analyzed the character of time and place distribution of sunshine and the yields distribution of crop in different models of intercropping of poplar with crops. It was suggested that if eight hours sunshine guaranteed in the middle of rows in a day the spacing between rows of poplar should be 28m when they are 5 year old, 56m when 10 year old. The spacing can be 14m or 7m when the poplars are planted at the beginning for fully utilize abundant light energy and land resources.
出处
《中国农业气象》
CSCD
1998年第6期1-7,共7页
Chinese Journal of Agrometeorology
关键词
林粮间作
杨树
光照效应
相对辐照度
作物产量
Intercropping of poplar with crops
Effect of illumination
Relavity sunshine intensity
Intercrop
