论文部分内容阅读
马铃薯环腐病、黑胫病、病毒病等病害都是通过种薯传染蔓延的。种好马铃薯无病留种田,不仅是兼治多种病害的有效措施,而且还可以把防病与提纯复壮有机地结合起来。根据几年来的经验,建立留种田在技术上应注意以下几个问题:坚持抓好一、二级留种制。每年马铃薯秋收前,在留种田内选择种性优良,无病健壮的单株作好标记,单收,单贮,下年播种前,再严格挑选,剔除病烂,单独播种,作为一级留种田。一级留种田秋
Potato ring rot disease, black shank disease, virus disease and other diseases are spread through the seed potato. Planting potato-free disease-free farming is not only an effective measure to cure multiple diseases, but also organically combines disease prevention and rejuvenation. According to years of experience, the establishment of the remaining farming technically should pay attention to the following questions: Persist in doing a good job of secondary and subsistence system. Before the autumn harvest of the potato each year, select the species with fine species and disease-free and sturdy in the remaining farming fields to mark the single crop and single crop. Before the next year sowing, select them carefully, remove the bad ones and sow them separately . A farm stay autumn