施肥对日光温室土壤微生物与酶活性变化的影响

在日光温室内,采用田间试验的方法,研究不同施肥处理对西红柿土壤酶活性和土壤微生物数量的影响。结果表明:施有机肥、化肥、有机肥 叶面肥处理土壤磷酸酶活性增加,施化肥 叶面肥处理比施化肥处理土壤磷酸酶活性增加;施有机肥处理土壤脲酶活性增强;施化肥 叶面肥处理土壤磷酸酶活性比施有机肥 叶面肥处理降低;施肥对蔗糖酶和过氧化氢酶活性的影响较小。施有机肥处理土壤细菌、真菌和放线菌数量增加,施化肥处理土壤细菌数量降低,土壤真菌和放线菌数量增加。

Effect of fertilization on soil microorganisms and enzyme activity under greenhouse condition

The effect of different fertilizations of tomato on soil microorganisms and enzyme activity was studied under greenhouse condition.Results show that phosphatase activity increases by using organic manure,NP fertilizer and organic manure plus foliar feed.There is a greater increase in phosphatase activity with the use of NP fertilizer plus foliar feed than the use of NP fertilizer alone.Using organic manure enhances urease activity.Fertilization with NP plus foliar feed leads to lower phosphatase activity than fertilization with organic manure plus foliar feed.Fertilization shows no significant effects on the activities of catalase and sucrase.The number of bacteria and fungi and actnomycete increases by using organize manure.Using NP fertilizer decreases the number of bacteria,increases the number of fungi and actinomycete.