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洋芋在生产上常采用块茎无性繁殖,易受病毒感染,引起产量骤减,种性退化。为了延长良种的使用年限,研究总结行之有效的留种技术,对提高洋芋产量有重要的现实意义。试验概况及条件 1984年,我们根据多年来洋芋生产上采用的四种留种方式,即:①早收留种(8月28日收);②株选留种;⑧整薯留种;④适时混收留种(9月28日收获)。以最后适时混收留种
Potato in the production of potato vegetative propagation often used, susceptible to virus infection, causing a sharp decrease in production, species degeneration. In order to prolong the useful life of the elite, it is of great practical significance to study the effective cementation technique to improve the yield of the yam. Test conditions and conditions in 1984 According to the four kinds of seed-keeping methods used in potato production over the years, namely: ① early-collected species (closed on August 28); ② strains of selected plants; ⑧ whole-potato seeds; ④ timely Mixed collection of species (September 28 harvest). In the final timely mix to stay species