摘要
本文探讨了大豆倒伏对植株性状和产量的影响。指出了大豆倒伏临界冠/根比和倒伏临界期植株的干物质分配状况。经对倒伏和未倒伏植株的比较研究,结果表明,倒伏可以使株高明显增高,分枝减少,并使干物质分配在营养器官中的比例明显高于繁殖器官,最终导致荚重、粒重、百粒重、经济系数显著降低,产量约减少56％。
The effects of lodging on soybean yie!d formation were studied with 13 varieties. The results showed that one of the main reasons of soybean lodging was the weak root system. The critical top/root of lodging was about i 0. 08. Lodging would result in the prolongation of plant stem, the decrease of number of branches, more distribution of dry matter in vegetative organs, than that of productive organs, the remarkable reductions of pod weight per plant, seed weight per plant, 100 seeds weight and economical ratio and about 56% yield decrease. Different varieties had different responses to lodging.
出处
《大豆科学》
CAS
CSCD
北大核心
1993年第1期81-85,共5页
Soybean Science
关键词
大豆
倒伏
干物质分配
产量
Soybean
Lodging
Distribution of dry matter
