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地势高寒,无霜期短的地区,蔬菜栽培的茬口安排一般有两种类型:一种是“一茬到底”,一种是“两茬复种”。“一茬到底”的栽培方法在七月份以前叶片复盖面积不足栽培面积的5%,其中95%栽培面积上的阳光、水份、肥料不能利用。而“两茬复种”则常常因为给主茬菜清地而需要提前收获,既造成了劳力、运输的紧张,又影响均衡上市。为了解决蔬菜茬口安排上的这些问题,集宁地区贫下中农积极开展科学实验,通过推广间、套、复种,调整了茬口安
Terrain alpine, frost-free short areas, vegetable cultivation stubble arrangements are generally two types: one is “a crop in the end”, one is “two stubble cropping.” The cultivation method of “one stub to the end” leaves less than 5% of the cultivated area before July, of which 95% of the cultivated area of the sun, water and fertilizers can not be utilized. The “two stubble multiple cropping” often needs to be harvested ahead of time because it gives the main stubble to clear the ground, which not only causes labor and transportation tensions but also affects a balanced listing. In order to solve these problems in the arrangement of vegetable stubble crops, the poor and middle peasants in Jining Prefecture have actively carried out scientific experiments and adjusted the stubble