摘要
本文用定位试验讨论了黄绵土主要豆科牧草对土壤生物活性和肥力的影响。研究表明:多年生豆科牧草提高土壤酶活性的作用大于冬小麦;豆科作物中苜蓿的效果最好,红豆草、小冠花次之,裸露地较差,黄豆最差;这些多年生牧草能有效地控制土壤侵蚀和养分亏损。土壤转化酶活性与草地主要养分关系密切,它可作为土壤肥力指标。研究从机理上揭示了多年生豆科牧草提高土壤肥力的重要作用。
The biological acvities and soit fertility of legume were studied.The result showed that the perennial legume forages have a better activity in increasing the soil enzymes than wheat.Among legume crop the alf- alfa was the best,sainfoin and crownvetch were the second,soybean was the worst.These perennial forage can effectively control soil erosion and debility of soil nutrients.There were closely relations between the ac- tivity of invertase and main soil nutrients,that can be the index of soil fertility.The study prove that the legumes have the ability to increase the fertility of soil.
出处
《草业科学》
CAS
CSCD
北大核心
1993年第5期20-23,共4页
Pratacultural Science
关键词
豆科牧草
土壤
酶活性
肥力
Legume forage
soil enzyme
fertility
nutrient
