水淹对老桃园土壤和再植桃苗生长的影响  

Effect of Different Water Flooded Methods on Soil of Old Orchard and Growth of Replanted Peach Seedling

作　　者：赵宝明[1] 顾燕芬[1] 赵杰[1] 许业帆 

机构地区：[1]上海市浦东新区农业技术推广中心,上海浦东201201

出　　处：《东南园艺》2015年第4期1-6,共6页Southeast Horticulture

基　　金：上海市科技兴农推广项目(沪农推字(2015)第1-4号)

摘　　要：研究了不同水淹方法对老桃园土壤和再植桃苗生长的影响,结果表明,保持较长时间的薄水层能增加放线菌和细菌数量,其中间歇灌水60 d、间歇灌水30 d、间歇灌水30 d后薄水层30 d等3个处理对真菌数量有较大的增加作用。对土壤养分的影响主要表现为能明显减少碱解氮的含量和EC,p H值有一定减小;间歇灌水30 d后薄水层30 d能增加有效磷的含量,间歇灌水45 d后薄水层35 d,能增加有效磷的含量,并明显减少速效钾的含量。以间歇灌水60 d和间歇灌水30 d对桃苗主干增粗和3主枝增长作用最明显,以间歇灌水60 d、间歇灌水30 d后薄水层30 d对3主枝的增粗最明显。侧重于桃苗生长情况,建议优先选用间歇灌水60 d和间歇灌水30 d后薄水层30 d等2种方法进行土壤改良。Effect of different water flooding methods on soil of old orchard and growth of replanted peach seedling was studied. The results showed that long time thin water layer could increase the number of actinomycetes and bacteria. Three treats of intermittent irrigation for 60 days, intermittent irrigation for 30 days and thin water layer for 30 days after intermittent irrigation for 30 days could increase the number of fungi.Water flooding had influence on soil in the content reduction of alkali solution nitrogen and EC and p H＇s fall. Thin water layer for 30 days after intermittent irrigation for 30 days could increase the content of available phosphorus. Thin water layer for 35 days after intermittent irrigation for 45 days could increase the content of available P and reduce the content of available K. Intermittent irrigation for 60 days and intermittent irrigation for 30 days couldsignificantly increase the diameter of trunks and the length of three branches.Intermittent irrigation for 60 days and thin water layer for 30 days after intermittent irrigation for 30 days could significantly increase the diameter of three branches. For growth of peach seedlings,intermittent irrigation for 60 days and thin water layer for 30 days after intermittent irrigation for 30 days were recommended for soil improvement.

关 键 词：水淹 老桃园 土壤 再植桃苗 生长 影响 

分 类 号：S158.3[农业科学—土壤学]