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李子(Prunus Salicina)新品种——‘绥李3号’,自1985年以来,各地大量育苗。育砧苗的方法均采用播种‘小黄李’(中国李P.salicina Lindl.)和‘毛樱桃’(tomentosa Thunb.)的方法。这种方法虽然优点很多,但不能不注意到种子繁殖后代有变异的问题。尤其‘小黄李’逐渐被优质的栽培品种所取代,在李子园采集到的‘小黄李’种子,必然有一部分是与临近栽培品种自然杂交的,这部分种子播种后群体抗寒性难以保持一致。因此,在抗寒力差的砧木上嫁接的品种,就有因根系受冻而树势变弱的问题。实际观察,在10年生大面积李园中,确有这种现象。所以,探索无性繁殖李子砧木苗,以解决砧木抗寒性不尽一致的问题,很有意义。根据李子在生长季节产生大量根蘖和萌条的特点,利用冬季剪下的硬枝和夏季剪下的绿枝进行扦插育苗是可行的。
Prunus Salicina new variety - ’Sui Li 3’, since 1985, a large number of nursery throughout. The methods of raising anvil seedlings are all sown by the method of sowing ’Xiaoli Li’ (P. plum L. Lindl.) And ’Tomentosa Thunb.’ Although this method has many advantages, one can not fail to notice the variation of seed generation. In particular, “small yellow plum” is gradually being replaced by high-quality cultivars. Some seeds of “small yellow plum” collected in the plum garden will inevitably have some natural crossbreeding with nearby cultivars. The cold hardiness of these seeds after sowing is difficult be consistent. Therefore, the rootstocks grafted on cold hardy rootstocks have the problem of getting weak due to the freezing of roots. The actual observation, in a large area of 10 years Li Park, there is indeed this phenomenon. Therefore, to explore clonal plum rootstock seedlings, rootstocks to solve the problem of inconsistent cold is of great significance. According to the characteristics of prunus growing in the growing season, the use of hard-cut branches in winter and green branches cut in summer is feasible.