不同株高玉米对间套作甘薯地上部性状的影响  

Effects of Different Plant Height Maize on Intercropping Sweet Potato Over-ground Characteristics

作　　者：张艳 郭书亚 汤其宁 卢广远 杨爱梅 尚赏 ZHANG Yan;GUO Shuya;TANG Qining;LU Guangyuan;YANG Aimei;SHANG Shang(Shangqiu Academy of Agriculture and Forestry Sciences,Shangqiu 476000,China)

机构地区：[1]商丘市农林科学院,河南商丘476000

出　　处：《山西农业科学》2020年第9期1449-1455,共7页Journal of Shanxi Agricultural Sciences

基　　金：河南省现代农业产业技术体系-商丘玉米综合试验站(Z2015-02-02)。

摘　　要：为了解玉米甘薯间套作模式下不同株高玉米对种间甘薯农艺性状的影响,采用双因素(不同株高玉米(A)和不同类型甘薯(B))三水平(玉米品种和甘薯类型均设3个水平,分别为郑单958(Y1)、先玉335(Y2)、豫单9953(Y3);商薯19(G1)、商薯K8(G2)、商薯X6(G3))随机区组设计,通过不同玉米甘薯间套作模式,研究了不同株高玉米对甘薯地上部蔓长、茎粗、分枝数、叶面积指数(LAI)等性状的影响。结果表明,玉米生长前期,随着玉米植株不断增高,对甘薯各种农艺性状的影响也在不断变化;而在甘薯幼苗栽培70 d后,玉米株高保持稳定,对甘薯农艺性状的影响也保持不变。在不同玉米、甘薯品种和不同间套作模式下,甘薯幼苗栽培70 d时,蔓长表现为Y2G1组合甘薯最长,Y3G2组合蔓长最短;茎粗表现为Y1G2组合甘薯最大,Y2G3组合最小;分枝数表现为Y2G3组合甘薯最多,Y3G2组合最少;LAI表现为Y3G1组合甘薯最高,Y1G3组合最低。综合甘薯各种农艺性状表现可知,豫单9953与商薯19的组合效果最佳。研究结果可为玉米甘薯合理间套作的品种选择提供科学依据。To understand the effects of different plant height maize on agronomic characteristics of sweet potato in the maize and sweet potato intercropping model,this experiment adopted different plant height maize(A)and different types of sweet potato(B)two factors and three levels(maize varieties set 3 levels,including Zhengdan 958(Y1),Xianyu 335(Y2),Yudan 9953(Y3),sweet potato types set 3 levels,including Shangshu 19(G1),Shangshu K8(G2),Shangshu X6(G3)),randomized block design,through different maize and sweet potato intercropping models,studied the effects of different plant height maize on the characteristics of vine length,stem diameter,branch number and LAI of sweet potato over-ground in the maize and sweet potato intercropping model.The results showed that at the early growth stage,the effects on various agronomic traits of sweet potato were also changing with the increase of maize plants,however,the height of maize plants remained stable after 70 d of sweet potato seedlings cultivation,and the effect on sweet potato agronomic characteristics also remained constant.Under different maize and sweet potato varieties and different intercropping modes,when sweet potato seedlings were cultivated for 70 d,the vine length showed the vine length was the longest in Y2G1,and the shortest in Y3G2,the stem diameter showed the stem diameter was the thickest in Y1G2 and the thinnest in Y2G3,the branch number showed the largest branch number was Y2G3 and the lowest was Y3G2,the LAI showed the highest value was Y3G1 and the lowest was Y1G3.Base on the comprehensive analysis of various agronomic characteristics of sweet potato,the combination of Yudan 9953 and Shangshu 19 was best in this study.The research results will provide a scientific basis for the selection variety in the maize and sweet potato intercropping model.

关 键 词：株高 玉米 间套作 甘薯 地上部生长 

分 类 号：S531[农业科学—作物学]