不同排水体对三七生长、土壤养分及根区土壤微生物的影响  

Effects of different drainage bodies on growth,soil nutrients and root zone soil microorganisms of Panax notoginseng

作　　者：游琪 杨启良[1] YOU Qi;YANG Qiliang(Faculty of Agricultural and Food,Kunming University of Science and Technology,Kunming,Yunnan 650500,China)

机构地区：[1]昆明理工大学农业与食品学院,云南昆明650500

出　　处：《排灌机械工程学报》2022年第9期959-965,972,共8页Journal of Drainage and Irrigation Machinery Engineering

基　　金：国家自然科学基金资助项目(51779113,51979134)。

摘　　要：为探究适宜三七种植的排水体,通过大田试验,设计了3种排水体处理:桉树皮(SP)、玉米秸秆(YM)、烟杆(YG),研究了排水体埋设深度为20 cm时,三七各生育期的生长、土壤微生物数量及养分含量状况.结果表明,与对照组CK相比,不同排水体处理下三七的生长指标、土壤速效养分含量及土壤微生物数量均显著增加;排水体对埋设深度附近的土壤具有一定的增肥保肥作用,灌后1 d和7 d在0~40 cm土层,土壤含水率按处理排序由大到小均表现为CK,YG,SP,YM;添加排水体对降低三七发病率作用更明显,与对照组CK相比,处理YM下三七发病率显著降低了34.67%;经综合比较,玉米秸秆作三七田排水体为试验条件下的最佳方案.In order to explore suitable drainage body for the planting of Panax notoginseng,three drainage treatments,eucalyptus bark SP,corn stalk YM,tobacco stem YG,were designed through field experiments.Three kinds of drainage treatments were designed:eucalyptus bark(SP),corn straw(YM)and tobacco stalk(YG).The growth,soil microbial quantity and nutrient content of Panax notoginseng in each growth period were studied when the depth of drainage was 20 cm.The results show that compared with the treatment of CK,the growth index,soil available nutrient content and the number of microorganisms in soil under different drainage treatments are significantly increased.The drainage treatments have the effects on increasing the nutrients of soil and reducing the losses of nut-rients in soil.In the 0-40 cm soil layer,after irrigation 1 day and 7 days,the moisture content of soil is expressed as CK>YG>SP>YM.Compared with the CK,the incidence rate of Panax notoginseng treated by YM is significantly reduced by 34.67%.Through comprehensive comparison,the best scheme under this experimental condition is to use corn straw as the drainage water for the field of Panax notoginseng.

关 键 词：三七 排水体 根系 土壤微生物 土壤养分 

分 类 号：S274.3[农业科学—农业水土工程]