生草覆蓋對(duì)有機(jī)弼猴桃園土壤有機(jī)碳組分和微生物群落特征的影響

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中圖分類(lèi)號(hào)：S153.6 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1007-0435（2025）07-2162-10

引用格式：，等.生草覆蓋對(duì)有機(jī)獼猴桃園土壤有機(jī)碳組分和微生物群落特征的影響[J].草地學(xué)報(bào)， 2025，33（7） ：2162—2171 CAI Ming-ming，CHEN Hui-min，WANG Xiao-tie，et al. Efects of Cover Crops on Soil Organic Carbon and Micro bialCommunity CharacteristicsofOrganic Kiwifruit Orchards inGuanzhong Region[J].ActaAgrestia Sinica，2025，33 （7）：2162-2171

Effects of Cover Crops on Soil Organic Carbon and Microbial Community Characteristics of Organic Kiwifruit Orchards in Guanzhong Region

CAI Ming-ming1， CHEN Hui-min1， WANG Xiao-tie2， TAN Hua1， CHEN Jia-xuan1，LONG Ming-xiul* （1.College of Grassand Agriculture，Northwest A&F Universty，Yangling，ShaanxiProvince 7121oo，China; 2.Baiheng Organic KiwiOrchards Co.，Ltd.，Yangling，Shaanxi Province 712loo，China）

Abstract：To further evaluate the effects ofcover crops on soil organic carbon fractions and microbial community structure in organic kiwifruit orchards（Actinidia chinensis），a field experiment was conducted at an orchard from 202O to 2O23 in Baiheng，Yangling，Shaanxi Province，China. Whiteclover（Trifolium repens） was sown as the cover crop，and clean tilage（CT）was served as the control. Soil organic carbon fractions，microbial residue carbon，and microbial community structure were analyzed in the 0-20cm soil layer under three-year-old inter-row areas of white clover.The results showed that cover crop significantly increased soil microbial biomass carbon，microbial biomass nitrogen， β -1，4-glucosidase，and β-1，4 -xylosidase activities（ P<0.05 ，while sig nificantly decreased dissolved organic carbon content by 25.87% （ P<0.01 . The evenness and diversity of soil bacteria significantly reduced （ P<0.05） ，leading to an increase in negative competitive relationships among bacterial species.There was a significant positive correlation between soil organic carbon，microbial residue carbon， and aggregate stability （P<0.05） .In conclusion，the use of white clover as a cover crop in organic kiwifruit orchards in the Guanzhong region not only enhanced the content of surface soil organic carbon fractions and carbon-cycling enzyme activities，but also promoteds soil carbon cycling and the stability of organic mater by optimizing the ecological structure and functional capacity of the soil microbial community.

Keywords：Soil organic carbon;Microbial necromass carbon;Soil microbialcommunity;Cover crops in orchard

我國(guó)是世界弼猴桃第一生產(chǎn)大國(guó)，弼猴桃也是陜西省僅次于蘋(píng)果產(chǎn)業(yè)的第二大特色支柱產(chǎn)業(yè)，在促進(jìn)當(dāng)?shù)剞r(nóng)戶增收致富、助力中國(guó)鄉(xiāng)村振興發(fā)展中發(fā)揮著巨大作用。（剩余16250字）