豆科作物秸秆还田对毛桃幼苗生长及养分吸收的影响

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中图分类号：S662.1;S14 文献标识码：A 文章编号：1000-4440（2025）06-1207-09

Abstract： In order to improve the comprehensive utilization of crop straws，and to screen the suitable types of legume crops for returningto the field，this studytook no application of straw as the control（CK），set four legume crops（Lablabpurpureus，Vigna unguiculata，Vignaumbellataand Phaseolusvulgaris）strawsas treatments，and the effects of applying different legume crop straws on the growth and nutrient absorption of peach seedlings were studied. The results showed that the straw of L* purpureus increased the root and shoot biomass of peach seedlingsby

8.62% and 6.91% ，respectively，comparedwithCK，while the strawof V. umbellata decreased the shoot biomass of peach seedlings by 7.70% . Compared with CK，the straw of L ：purpureus increased the contents of chlorophyll a ，chlorophyll b， and carotenoids in the leaves of peach seedlings by 19.06% ， 22.12% ，and 18.78% ，respectively，the straws of L. purpureus， V. unguiculata and P . vulgaris significantly increased the antioxidant enzyme activities of peach seedlings，while the straw of V. umbellata decreased the activities of peroxidase （ P（DD ），catalase（ CAT ），and ascorbate peroxidase （ APX ）of peach seedlings by 4.99 % ， 5.23% ，and10.95 % ，respectively.The application of straws of four legume crops increased the total nitrogen contents in roots and shoots of peach seedlings，and the effect of V. umbellata straw was the most significant. The straws of V. umbellata and P . vulgaris also increased the total phosphorus content in roots of peach seedlings.In addition，thesoilalkali-hydrolyzablenitrogencontentandroottotalnitrogencontentshowedhighlysignificantpositivecorrlation withabovegroundtotal nitrogen content.Theroottotal phosphorus content，soilavailablephosphoruscontentandroot total potassiumcontent showed highlysignificant positivecorrelationwithaboveground totalphosphoruscontent.Thesoil availablephosphoruscontentandshoot totalphosphoruscontentwereinsignificant positiveorhighlysignificantpositivecorrelationwithabovegroundtotalpotasiumcontent.Therefore，theapplicationof lentil strawisthemostbeneficial tothe growth of peach seedlings.

Key words： legume crops；straw mulching；peach；growth；nutrient absorption

农作物秸秆富含多种营养元素，施入土壤后，可降低化肥施用量，节约种植成本[1]。（剩余10785字）