不同覆盖方式下的西瓜地养分对比研究  

Comparative Study of Watermelon Soil Nutrient in Different Mulching Methods

作　　者：丁秀玲[1] 许强[1] 

机构地区：[1]宁夏大学农学院,宁夏银川750021

出　　处：《北方园艺》2010年第18期23-26,共4页Northern Horticulture

基　　金：国家"十一五"科技支撑计划资助项目(2006BAD15B05;2007BAQ0005502)

摘　　要：对不同覆盖方式下的西瓜地土壤养分进行了对比研究。结果表明:地面增加覆盖物后可以减轻耕层的含盐量使盐分由上层转移到下层,而灌水能使土壤容重增加,其中抑盐效果最好的是地膜覆盖,其次是砂田+地膜覆盖、砂石覆盖次之;在无灌溉水的条件下,养分利用率依次是砂石+地膜覆盖>砂石覆盖>地膜覆盖,并且0～20cm和20～40cm土层土壤碱解氮和全氮含量最高的覆盖方式是地膜覆盖,最低的是砂石+地膜覆盖。因此,在干旱地区推广发展砂石+地膜覆盖并适当增施肥料,有助于增产增收,保持干旱地区农业的持续发展。The watermelon soil nutrients in different mulching methods were studied.The results showed that increase ground cover will relieve the salinity of topsoil to make the transfer of salt from the upper to the lower deck,While irrigation can increase soil bulk density,which was the best salt inhibition plastic film mulch,followed by Sunada＋plastic film mulch,gravel covering second;In the absence of irrigation water under the conditions of nutrient utilization followed by sand and gravel＋mulching＂sand and gravel covered＂plastic film mulch,and the 0-20cm and 20-40cm layer of soil nitrogen and nitrogen content in the highest form of plastic film covering coverage,the lowest sand＋mulching.Thus,in arid regions to promote the development of sand and gravel＋by mulching and appropriate fertilizer to help increase production and maintain the sustainable development of agriculture in arid regions.

关 键 词：不同覆盖方式 西瓜地 养分 对比 

分 类 号：S651[农业科学—果树学]