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洋芋是山区的主粮之一,在我区农业生产中占有重要位置。为了进一步提高洋芋单产,探索高产经验,我们于1984—1985年度进行了地膜覆盖栽培试验,取得了较好效果,表现产量高,个体大,平均亩产2020公斤,单薯重83.3克,比露地洋芋每亩增产332公斤,增长16.4％;单薯重增37.8克,增长45.4％。每亩纯收入增加33.12元,值得在山区推广应用。 一、洋芋地膜覆盖栽培的增产机理 1、延长了有效生育期 由于早春膜内温度要比露地高3—4℃,因此覆盖洋芋要
Potato is one of the staple foods in mountainous areas, occupying an important position in the agricultural production of our region. In order to further improve the yields of potato and explore high-yielding experience, we conducted mulching test in 1984-1985 and achieved good results. The results showed that the output was high and the individual was large with an average yield of 2020 kg and a weight of 83.3 g. Potato yield 332 kg, an increase of 16.4%; potato increased 37.8 grams, an increase of 45.4%. Net income per mu 33.12 yuan, it is worth promoting the application in the mountains. First, the potato film mulching cultivation stimulation mechanism 1, to extend the effective growth period As early spring film temperature is higher than the open field 3-4 ℃, so cover potato