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东北农学院培育的马铃薯新品种东农303,在我省一些地区种植,表现早熟、高产,受到欢迎。但该品种感马铃薯卷叶病毒,种植二、三年后,便退化减产。为了解决就地留种问题,我们根据国际上早收繁种及“731”药剂打破休眠等先进技术,于1984、1985两年搞了地膜覆盖早收夏播繁种技术研究,对于克服种薯退化效果很好,而且早收夏播一年两季繁殖系数达106.5倍。这项技术很适于农民繁种专业户应用,不仅可以防止东农303种性退化,而且将有助于解决我省马铃薯自给问题。
Dongnong 303, a new potato cultivar cultivated by Northeast Agricultural College, is planted in some areas of our province, showing premature and high yield and being welcomed. However, the variety of susceptible to potato leafroll virus, planted two or three years later, it will yield reduction. In order to solve the problem of local species retention, according to the international early harvest breeding and “731” agents to break the dormancy and other advanced technologies, in 1984, 1985 two years engaged in plastic film mulching early summer sowing breeding technology research, to overcome the seed Degradation effect is very good, and early harvest summer sowing coefficient of breeding two times a year up to 106.5 times. This technology is suitable for farmer breed specialized households, not only to prevent 303 kinds of Dongnong degradation, but also will help solve the problem of potato self-sufficiency in our province.