摘要
严重春旱和轻度春旱下的试验表明:区域性布局上,确定小麦与玉米、大豆接茬方式(套作和连作)及相应种植形式的合理比例,应以春旱发生频率和程度为主要依据。不同间套作方式对单项作物的产量影响较大,综合产量和产值趋于接近,认为间套作优势主要体现于加强了稳产避灾功能。从“麦玉豆”间套作系统中归纳了四个平衡点和七个技术原则。
The comparison experiments of different intercropping and interplanting patterns for wheat, corn and soybean under serious or slight drought in 1986, 1987 indicated that: on the regional arrangement, the determination of the succesion cultivation forms (interplanting or continuous planting) and the corresponding rational propotion for three crops was depended mainly on the frequence and the extent of the spring drought. The influence on the yield of unitary crop by various intercropping and interplanting forms was greater , but the annual yield and the output value trended to be similar. Therefore, the superiority of the intercropping or interplanting Was regarded as a mean strengthening the functions of avoiding calamities and yield stability of crops. Four equilibrium relations and seven technique principles were summed up from the systematic relation of inleero-pping and interplanting for wheat, corn and soybean.
出处
《西南农业学报》
CSCD
1989年第3期32-42,共11页
Southwest China Journal of Agricultural Sciences
关键词
小麦
玉米
大豆
间作
套作
效果
Wheat
Zea mays
Soybean
Upland
Cultivation system
Guizhou
