[目的]探明覆盖地布对花椒园土壤理化性质与杂草生长的影响,为花椒轻简化栽培提供依据.[方法]以六月椒树为试验材料,采用田间调查和室内分析相结合的方法,研究清耕无覆盖(CK)、不可降解地布覆盖(T1)和可降解地布覆盖(T2)对花椒园土壤理化特性和抑草效果的影响.[结果]覆盖不同地布对花椒园土壤养分含量、物理特性及杂草防效影响不同.覆盖地布处理的土壤有机质、全氮、全磷和全钾含量均提高,各指标整体均表现为地布覆盖处理＞清耕不覆盖.土壤容重降低,0～20 cm和40～60 cm 土层均依次为可降解地布覆盖＜不可降解地布覆盖＜清耕不覆盖,20～40 cm 土层为不可降解地布覆盖＜可降解地布覆盖＜清耕不覆盖.土壤总孔隙度、土壤含水率和田间持水量均显著提高,最大持水量增大,各指标整体均表现为地布覆盖处理＞清耕不覆盖.不可降解地布覆盖和可降解地布覆盖处理对看麦娘和野豌豆的防效均达100.00％,对艾草的防效分别为95.59％和92.65％.[结论]覆盖地布可有效提高土壤养分含量,改善土壤物理特性,抑制杂草生长,从而促进花椒植株生长,在花椒园生产管理中应根据实际情况选择可降解地布或不可降解地布进行覆盖.
Effects of Mulching Geotextile on Soil Physicochemical Properties and Weeds Growth in Zanthoxylum bungeanum Orchard
[Objective]The effects of mulching geotextile on soil physicochemical properties and weed growth in Zanthoxylum bungeanum orchard were studied,which provided reference for the light and simple cultivation technique of Z.bungeanum.[Method]Taking Z.bungeanum'Liuyuejiao'trees as experimental material,and using the method of field investigation combined with laboratory analysis,the effect of cleaning tillage without mulching(CK),mulching non-degradable geotextile(T1)and mulching degradable geotextile(T2)on soil physicochemical properties and weed inhibition in Z.bungeanum orchard were studied.[Result]Soil nutrient content,physical characteristics and weed control efficiency were affected differently by different ground covering.The contents of organic matter,total nitrogen,total phosphorus and total potassium in soil mulched with geotextile all increased,and overall performance of each index showed as mulching geotextile＞clear tillage without mulch.Soil bulk density decreased,which showed as degradable geotextile mulch＜non-degradable geotextile mulch＜clear tillage without mulch at the depth of 0-20 cm and 40-60 cm,but it show as non-degradable geotextile mulch＜degradable geotextile mulch＜clear tillage without mulch at the depth of 20-40 cm.The total soil porosity,soil moisture content and field water capacity increased significantly,and the maximum water capacity increased.The overall performance of each index was geotextile mulch＞clear tillage without mulch.The control efficiency of non-degradable and degradable geotextile mulching treatment were both 100.00％for Alopecurus aequalis Sobol.and Vicia sativa,and respectively 95.59％and 92.65％for Artemisia argyi.[Conclusion]Mulching geotextile could effectively increase soil nutrient content,improve soil physical properties,inhibit the growth of weeds,and promote the growth of Z.bungeanum.In the production management of Z.bungeanum orchard,degradable geotextile or non-degradable geotextil should be selected for covering according to the actual situation.
NETL
NSTL
万方数据
维普
