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马铃薯是川东山区主要粮食作物之一,春秋两季产量占全年粮食总产量的20%左右,然而,近几年一些马铃薯品种发生种性退化,其结果导致单产低而不稳,品质变坏,造成这一局面的主要原因:一是不良生态环境条件的影响,特别是高温和病毒是导致种性退化的主要原因;二是品种多、乱、杂,导致种性退化和薯块混杂;三是良种良法不配套;四是选留种薯和贮种方法不当等,这些都是导致马铃薯发生不同程度的种性退化和薯块混杂的主要原因,为此,笔者将如何防止马铃薯种性退化和品种间混杂提出几点浅见: 1 选用和引进优良品种,扩大良种面积毛泽东同志曾经说过:“有了优良品种,既不增加劳动力、肥料,也
Potato is one of the major grain crops in mountainous areas of eastern Sichuan. The output of spring and autumn crops accounts for about 20% of the total grain output of the whole year. However, in recent years, some potato varieties have a kind of degeneration, resulting in low and unstable yield and variable quality Bad, the main reasons for this situation: First, the impact of adverse ecological conditions, especially high temperature and virus is the main reason leading to species degeneration; Second, more variety, chaos, miscellaneous, leading to degenerative and potato mixed ; Third, good varieties of good law does not support; fourth is to choose to retain the kinds of seed storage and improper methods, which are all led to different degrees of potato degenerate and potato mixed the main reason for this, I will prevent the potato species Sexual deterioration and inter-species hybrid put forward a few humble opinions: 1 selection and introduction of fine varieties, expand the area of fine varieties Mao Zedong once said: ”With excellent varieties, neither increase labor, fertilizer, but also