不同施肥处理对连作西瓜土壤微生物区系的影响  

Effects of Different Fertilizer Application on Soil Microflora of Continuous Cropping Watermelon

作　　者：朱盼盼[1] 张显[1] 任自力[1] 

机构地区：[1]西北农林科技大学园艺学院,陕西杨凌712100

出　　处：《北方园艺》2013年第11期171-174,共4页Northern Horticulture

基　　金：国家西甜瓜产业技术体系岗位科学家资助项目(CARS-26-18)

摘　　要：以连续种植2a西瓜的连作地土壤为试验对象,以单纯施用化肥为对照,在同等养分供给的水平下,研究了不同有机肥与有机-无机混施对西瓜整个生育期土壤微生物区系动态变化的影响。结果表明:有机肥与有机-无机混施处理后,西瓜整个生育期土壤真菌数量均显著降低,同时增加了西瓜伸蔓期及膨瓜期的土壤细菌和放线菌含量;有机-无机混施效果优于有机肥单施,其中以双钾型生物有机肥与化肥混施效果最好,牛粪效果最差。生物有机肥与化肥配施能有效改善连作西瓜土壤微生物区系,从而抑制西瓜连作障碍。Taking continuous cropping land soil which cultivated watermelon two years as the experiment material,using chemical fertilizer as control and the same nutrient supply level,the effects of different organic fertilizer and organic-inorganic fertilizer treatments on the soil microflora dynamic change during the whole growth stages of watermelon were studied.The results showed that all of organic and organic-inorganic fertilization treatments obviously decreased compared with the control on the amount of fungi during the whole growth stages of watermelon,but added the amount of bacteria and actionmyces in the soil during the setting and stretch tendril stage of watermelon.Among the fertilization,the effects of organic-inorganic mixed applied was better than that of organic fertilizer single applied,double K-type biological organic fertilizer＋chemical fertilizer was of the most efficiency,the cow dung was the worst.Application of bio-organic fertilizer can effectively ameliorate the soil microflora of continuous cropping watermelon,and inhibiting the watermelon continuous cropping obstacle.

关 键 词：有机肥 有机-无机混施 土壤微生物 西瓜品质 西瓜连作障碍 

分 类 号：S651[农业科学—果树学]