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本文研究了早熟品种马铃薯在生长过程中~(14)C 同化物的运转分配,发现同化物首先用来满足叶自身建设和维持活动需要,前者占70%以上,后者占23～29%,剩余量才分配给其它器官。主茎叶(16片)建成前主要流向茎叶,占54%以上,其次块茎,根系只占3%以下,主茎建成后,则主要流向块茎,占55%以上,甚至贮存在茎叶中的同化物也被运往块茎,数量多达20%以上。对~(14)C 同化物的竞争力,茎叶始终处于优势,块茎的竞争力只能到结薯盛期才能与茎叶相当,根系竞争力最弱,且随着植株生长进程而日益削弱。最后讨论了马铃薯生长时期的划分、各期的形态标志及相应的合理栽培技术措施。
In this paper, we studied the distribution of ~ (14) C assimilates in precocious potato varieties and found that the assimilates were first used to meet the needs of leaf self-construction and maintenance activities. The former accounted for more than 70% and the latter accounted for 23-29% The remaining amount is assigned to other organs. The main stems and leaves (16 slices) mainly flow to the stems and leaves before their establishment, accounting for over 54%, followed by the tubers and the roots only below 3%. After the main stems are completed, they mainly flow to the tubers, accounting for more than 55% of the total, even stored in stems and leaves Assimilates are also shipped to tubers in amounts up to 20% above. The competitiveness of ~ (14) C assimilates was always superior to that of stems and leaves. The competitiveness of tubers was comparable to that of stems and leaves only in the mid-tuber stage, and the weakest in the root system were the competitiveness of the tubers, which weakened with the growth of plants . Finally, the division of potato growth stage, the morphological signs of each phase and corresponding reasonable cultivation techniques and measures were discussed.