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马铃薯在江浙一带栽培,作为蔬菜供心市场,对增加伏缺期期间蔬菜供应起调节作用,收获供应期多在北方马铃薯收获南运之前,经济效益较高,因而菜农种植比较广泛。但是由于莱区土壤肥力水平较高,马铃薯栽植密度较大,加上南方马铃薯生长期间雨水多,光照不足,温度高,湿度大,常使马铃薯植株徒长,光合产物向块茎运转推迟,分配减少。又由于梅雨天气的影响,马铃薯必须在6月10日之前收完,徒长植株生育期迟,就不能充分发挥产量潜力。
Potato is cultivated in Jiangsu and Zhejiang provinces and serves as a market for vegetables. It plays a regulatory role in increasing the supply of vegetables during the shortage period. Before harvest, the supply of potatoes is higher in economic efficiency, so that farmers grow more extensively. However, due to the high level of soil fertility in Lai district, the planting density of potatoes is higher, and more rainwater, insufficient sunlight, high temperature and high humidity during the growth of southern potatoes often make the potato plants lengthened and the photosynthate to the tubers postponed and distribution decreased. And because of the rainy season, the potato must be closed before June 10, legally grown plants late, they can not give full play to yield potential.