摘要
通过大豆栽培小区对比试验证明:多效唑对大豆根系的单株根瘤数、单株根瘤鲜重、单个根瘤鲜重、有效根瘤率均有明显增加,有利于提高根系活力和根瘤固氮能力。多效唑还促使伤流量增加并使伤流液中细胞分裂素类物质的效价明显提高。因此,根系合成的细胞分裂素类物质向上转运,可产生抗顶端优势,促进侧芽发育和器官分化,加强营养调运,延迟叶片衰老,增花增荚等生理效应,从而使大豆植株分枝增多,花荚、籽粒增加,叶片生育期延长,籽粒增重,产量提高。
The results of comparison plot experiments for soybean showed: 1. PP333 could significantly promote the root-nodule formation of soybean, since it could increase the wet-weight of nodules in individual plant, and the individual nodule weight, and the rate of effective nodules as well. Henec PP_(333) could improve the activity of roots and the nitrogen-fixing capability of nodules; 2. PP_(333) could also increase the quantity of phloem exudate and the effective valence of its cytokinins in soybean.
出处
《江西农业学报》
CAS
1992年第2期157-160,共4页
Acta Agriculturae Jiangxi
关键词
多效唑
大豆
根系结瘤
伤流液
内源细胞分裂素
PP_(333) Soybean
Root- nodule formation
phleom exudate
eudogeneous cytokinins
