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马铃薯系我县山区的主要夏粮作物。随着套种间作的发展,栽培面积不断扩大。但长期以来,因马铃薯多习惯于春播,常遇到五、六月份的高温,加上冬季窖藏种薯暗芽丛生,体内营养大量消耗,致使种性退化,产量不高。为了探索马铃薯高产规律和解决种性退化问题,我们从1973年冬季开始,在桥上公社矿物大队对马铃薯春播改冬播,进行了试验。试验面积98亩,在套种条件、播种密度与春播相同的情况下,冬播的亩产1,105
The potato is the main summer cereal crops in my county mountain. As the intercropping progresses, the area of cultivation is constantly expanding. However, for a long time, because potatoes are mostly used to spring sowing, they often encounter the high temperature in May and June. In addition, winter dark cotyledons produce dark bulbs and consume a lot of nutrients in the body, resulting in degenerative species and low yield. In order to explore the law of high yield of potatoes and to solve the problem of degenerative species, we started the experiment in the winter of 1973, when the commune brigade on the bridge changed the winter sowing of the potato spring. Test area of 98 acres, in the intercropping conditions, planting density and spring sowing the same circumstances, the winter sowing yield 1,105