摘要
本文探讨了酸性紫色土中花生拌钼和水培液中不同钼浓度、酸度对花生根瘤菌结瘤固氮的作用。结果表明:①水培液中钼浓度为0.06～0.12ppm时,根瘤固氮酶活性、植株全氮(％)、植株干重达到最大值。②合理施用铝肥可延长根瘤固氮时间,增加植株氮、钼、钾和钙元素含量,提高花生产量;③钼可缓解酸性条件对结瘤固氮的抑制;④固氮酶活性和植株全氮以水培液PH6.5～8.0为最高。
Experiments were conducted to investigate the effect of Mo and PH on nodulation,nitrogenase activity and growth of Rhizobium—pcanut (Arachis hypogeae L.) symbiosis in axenic solution culture and in acid soils. The maximum of N content (%) , nitrogenase activity and dry weight of plant oceured with Mo rates from 0.06 to 0.12 ppm. Mo increased Rhizobium infection, contents of N,K,Mo,Can of plant and peanut yield. Moderate level of Mo Fertilizer prolonged nitrogen-fixing period. Mo protected symbiotic nitrogen-fixation from low PH6.5—8.0, produced the maximum of nitrogenase activity and total N (%) of plant.
出处
《四川农业大学学报》
CSCD
1990年第2期129-135,共7页
Journal of Sichuan Agricultural University
关键词
花生
钼
根瘤菌
固氮
酸性紫色土
NODULE BACTERIA
ALIDITY
MOLYBDENUM
NITROGEN.
