氰戊?乐果对油桐生长及其土壤理化性质的影响
On Effects of Fenvalerate -Dimethoate on Tung Oil Tree Growth and Soil Physicochemical Properties
-
摘要: 通过喷施杀虫剂氰戊?乐果，取样测试油桐幼苗生长情况，分析土壤理化性质的变化，探讨氰戊?乐果对油桐幼苗生长和土壤理化性质的影响效应，为油桐的害虫防治及管理提供科学依据。结果表明：对盆栽的油桐幼苗按照氰戊?乐果使用方法施用3个月后，土壤的pH、全磷和全钾含量均无明显影响，可显著提高土壤中的碱解氮、速效磷和速效钾含量，却使得土壤有机质和全氮含量明显降低，对油桐的生长影响不显著。可见，在一定的剂量范围内，氰戊?乐果可被广泛用作油桐的杀虫剂，其对土壤和植物生长影响不大，但长期施用，可导致土壤板结。Abstract: By means of spraying fenvalerate_dimethoate ,testing seeding grow th ,analyzing the changes of soil physical and chemical properties ,exploring the influences of fenvalerate_dimethoate on tung oil tree seedling grow th and soil physicochemical properties ,it can provide a scientific basis for the pest control and management of tung oil tree .Results show that ,according to the method of the fenvalerate_dimethoate three months ,it has no significant effects on soil pH ,the content of total P and total K in the soil ;it obvi_ously increases the contents of available nitrogen ,available phosphorus and available potassium but de_crease the contents of organic matter and total N ;it has no significant effects on the grow th of tung oil tree .It indicates that fenvalerate_dimethoate can be widely used as pesticide of tung oil tree and have no impact on the soil and grow th of plant in a certain range .But long_term application of fenvalerate_dime_thoate can lead to soil harden .
-
-
计量
- 文章访问数: 600
- HTML全文浏览数: 350
- PDF下载数: 0
- 施引文献: 0
下载: