摘要
本研究以马铃薯极早熟品种“东农３０３”脱毒种薯为试验材料，将种薯分成（２０±５）ｇ和（３０±５）ｇ两组，分别按５个密度进行种植（行距均为７０ｃｍ，株距分别为１２．５、１５．０、１７．５、２０，０和２２．５ｃｍ）．试验结果表明，在哈尔滨的自然条件下，马铃薯块茎产量和单位面积块茎数目随着种植密度的增大而增加，单个块茎重量则随着密度的增加而减少．大种薯（３０±５）ｇ播种可以获得较高的块茎产量．在本试验中，种薯重量为（３０±５）ｇ、株１２．５和１５．０ｃｍ时，获得了较高的块茎产量和较多的块茎数．通过对植株地上部鲜重和叶面积指数变化的分析，表明高密度群体具有发育快、生长旺盛的特点。
The parameters on seed potato production in Harbin was reported. The variety used was NEA303, which was divided into 2 groups based on tuber weight, 20±5g and 30± 5g. Five densities of population were made in the trial (spacing in row was 12.5, 15.0, 17.5, 20.0 and 22.5 cm with the same 70 cm spacing between rows). The results showed that yield and number of tubers were increased, but the average weight of single tuber was decreased as density of population increasing. Higher yield could be gained from large seed tuber (30g± 5g). The higher yield and numbers of tubers harvested were from the treatments of large seed tuber with 12.5 and 15.0cm spacing in row in the trial. The analyses or change on plant fresh weight above ground and leaf area index showed that potato planted in higher density or Population always developed quickly and thrivingly.
出处
《马铃薯杂志》
1996年第4期203-207,共5页
Chinese Potato Journal
关键词
东农303
种薯
种薯大小
密度
栽培
NEA303
seed potato production
seed tuber size
density of population
