中文摘要：

采用框栽法对不同绿肥品种的生物量和氮磷钾养分进行分析比较,初步筛选出旱坡地不同紫色土上适宜的绿肥品种。结果表明,在酸性紫色土上,黑麦草和毛叶苕子是鲜干草产量较高且养分积累量较多的绿肥品种;在碱性紫色土上,蚕豆和黑麦草是鲜干草产量较高且养分积累量较多的绿肥品种;在中性紫色土上,黑麦草和紫云英是鲜干草产量较高且养分积累量较多的绿肥品种。因此,酸性紫色土上适宜种植和翻压黑麦草和毛叶苕子,碱性紫色土上适宜种植和翻压蚕豆和黑麦草,中性紫色土上适宜种植和翻压黑麦草和紫云英。

英文摘要：

The method of box incubation was used to study differences of biomass and N,P,K nutrients in different varieties of green manure in three kinds of purple soil. Suitable varieties of green manure on upland sloping field with different kinds of purple soil were preliminarily screened. The results showed that fresh or dry grass yield, nutrient accumulation of ryegrass, hairy vetch were higher than those of other varieties of green manure in acid purple soil. Fresh or dry grass yield, nutrient accumulation of broad bean and ryegrass were higher and more than those of other varieties of green manure in alkaline purple soil. Fresh or dry grass yield, nutrient accumulation of ryegrass and milk vetch were higher than those of other varieties of green manure in neutral purple soil. Ryegrass and hairy vetch were suitable to be planted and pressed in acid purple soil. Broad bean and ryegrass were suitable to be planted and pressed in alkaline purple soil. Ryegrass and milk vetch were suitable to be planted and pressed in neutral purple soil.