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套种也称套作,一般是指在前季作物生长后期,将后季作物播种(或栽植)在前季作物行间、株间。例如,早春在垄台上种土豆,初夏在垄沟里种玉米,即是土豆、玉米套种。由于对环境条件(主要指对温度、光照)要求不同,播种期相差较远的两种作物,一先一后,交错种植在同一地块上,这就是套种的基本特点。在北方,一般前季作物早春(或前一年秋季)播种,夏季收获;后季作物晚春,或初夏播种,秋季收获。从时间上说,两种作物衔接,不会浪费生长季节;从空间上说,两种作物搭配,可以提高土地利用率。
Intercropping, also known as intercropping, generally refers to the latter part of crop growth, the latter part of the crop planting (or planting) in the previous crop lines, between strains. For example, potatoes were planted on the terrace in early spring, and maize was planted in ditches in early summer, ie potatoes and corn intercropping. As the environmental conditions (mainly refers to the temperature, light) different requirements, the sowing time difference between the two crops, one after the first, staggered planted in the same land, which is the basic characteristics of intercropping. In the north, the crops in the previous season are generally planted in early spring (or in the previous autumn) and harvested in the summer; late-season crops are sowed in late spring or early summer and harvested in autumn. In terms of time, the convergence of the two crops will not waste the growing season; spatially speaking, the combination of the two crops can improve land utilization.