摘要
在黄土高原旱作条件下,对连续轮作、施肥15年后不同处理过氧化氢酶、蔗糖酶、脲酶、碱性磷酸酶、蛋白酶活性进行了测定。结果表明,长期轮作施肥降低了旱地黑垆土的过氧化氢酶活性,以长期不种作物的休闲地酶活性最高,各处理比休闲地降幅为1 2%～20 6%。其它4种酶的活性则比休闲地有不同程度提高,蔗糖酶、脲酶、碱性磷酸酶、蛋白酶活性分别增加26 0%～138 3%、22 5%～321 7%、31 4～157 8%、15 2%～483 3%。有机肥的作用明显大于化肥,豆科作物苜蓿、豌豆、红豆草等对土壤酶活性的影响大于小麦、玉米等禾本科作物。
The effect of longterm crop rotation and fertilization on the activity of enzymes in soil was studied Soil samples (0～20 cm) were collected from plots where various crop and rotation combinations had been continuously applied to a black loessial soil (for 15 years) The results indicated that longterm rotation and fertilization reduced catalase activity by 12%～206% compared with fallow treatment Other soil enzyme activities including invertase, urease, alkaline phosphatase, and protease increased by 260%～1383%, 225%～3217%, 314～1578%, and 152%～4833% after different fertilizers were applied and different plants were cropped for 15 years continuously The effect of organic manure on soil enzyme activities was higher than that of chemical fertilizer and the enzyme activities affected by alfalfa, pea, and sainfoin (Onobrychis sativa) were higher than that of wheat and maize
出处
《植物营养与肥料学报》
CAS
CSCD
北大核心
2003年第1期9-13,共5页
Journal of Plant Nutrition and Fertilizers
基金
中国科学院知识创新方向性项目(KZCX2 413)
中国生态网络研究项目(CERN)资助。
