【摘要】 芒果园养殖蚯蚓的试验结果表明,与清耕土壤(CK)相比,在蚯蚓粪覆盖下,0～20cm土层的土壤电导率提高135%,容重为94.7%,钙含量提高150%,氮含量提高58%,磷含量提高13%,钾含量提高82%,pH值增加1.1,更接近于中性值;20～40 cm土层的土壤电导率提高65%,容重为87.5%,氮含量提高33%,磷含量提高12%,钾含量提高33%,钙含量提高77%。蚯蚓粪对土壤理化性质的改良作用优于牛粪,效果明显。更多还原

【Abstract】 This study showed that breeding earthworm in the mango orchard could improve the soil condition.Compared to the soil which was not mulched(control),in the depth of 0~20 cm soil strata which were mulched with vermicompost,the soil bulk density was 94.7% of control,the soil electrical conductivity improved 135%,the contents of N,P,K and Ca improved 58%,13%,82% and 150% respectively.The soil pH value increased 1.1 approaching neutral state. While in the depth of 20~40 cm soil strata,the soil bulk density was 87.5% of control,the electrical conductivity improved 65%,the contents of N,P,K and Ca improved 33%,12%,33% and 77% respectively.The effect of vermicompost was better than cow dung in improving the soil physical and chemical properties.更多还原