摘要
蚕豆能同等程度地利用EXC—Zn、OM—Zn和R_2O_2—Zn等有效态锌,并能促进土壤中难溶态RES—Zn和CA—Zn向EXC—Zn和R_2O_3—Zn转化。同时,能减少施入土壤的水溶态锌转化成RES—Zn的比例,从而使土壤中的锌保持较高活性。水溶态锌在土壤中的分布为:中性及钙质土CA—Zn>R_2O_3—Zn≥OM—Zu>RES—Zn>EXC—Zn;酸土为:R_2O_3—Zn>OM—Zn≥RES—Zn>EXC—Zn。
EXC—Zn, OM—Zn and R_2O_3—Zn in soils can be absorbed by broad bean equally. Broad bean cultivation can promote soil RES—Zn and CA—Zn transforming into EXC—Zn and R_2O_3—Zn, and making the fertilizer—Zn applied to soils maintain high activity. The contribution order is CA—Zn>R_2O_3—Zn>OM—Zn>RES—Zn>EXC—Zn in calicium and neutrial soils, or R_2O_3—Zn>OM—Zn≥RES—Zn>EXC—Zn in acidic soils under the cultivation of broad bean.
出处
《西南农业大学学报(自然科学版)》
CSCD
1990年第6期617-620,共4页
Journal of Southwest Agricultural University
关键词
蚕豆
紫色土
锌
转化
形态
broad bean
zinc
morphology/evolutions