城固县稻茬冬闲田冬播绿肥品种比较试验研究

在陕西省城固县稻茬冬闲田开展冬播绿肥品种比较试验，结果表明：参试四个绿肥品种中，紫云英、紫花苕子和白花豌豆越冬成活率高，土壤覆盖率大，春季返青早，植株生长快，地上部分生物量大，分别比对照大粒蚕豆增产6 312 kg·hm^-2、5 850 kg·hm^-2、 {4 788 } kg·hm^-2，增幅分别为46.5%、43.1%、35.3%，适宜城固县大面积推广种植；大粒蚕豆越冬成活率低、土壤覆盖率低、地上部分生物量小，不宜在城固县大面积推广种植。

Comparative Study of Winter sowing Green Manure Species in Winter fallowed Rice Stubble Field of Chenggu County

Taking large broad bean as CK, a comparative study of four winter-sowing green manure species was conducted in winter-fallowed rice stubble field of Chenggu county.The results showed that compared with the CK, Astragalus smicus, Vicia angustifolia and Pisum sativum had a high survival rate for overwintering, had a high soil coverage rate, returned to green early in Spring, and grew fast in plants, and had more aboveground biomass. Its yield increased by 6 312 kg·hm^-2,5 850 kg·hm^-2 and 4 788 kg·hm^-2, respectively, the increase rate was 46.5% , 43.1% and 35.3% , respectively. So Astragalus smicus, Vicia angustifolia and Pisum sativum are suitable to be planted widely in Chenggu County, but the large broad bean is not suitable because of its low survival rate, low soil cover and small aboveground biomass. . ;