摘要
在净作条件下,马铃薯不同密度的试验结果表明,马铃薯高产适宜密度为5000～6000株/667m2,产量达到2322～2450kg/667m2;叶面积系数随密度增加而增大,低密度群体叶面积系数较低,高密度群体叶面积系数过大,均不是理想产量的密度;总光合势随密度增加而增大,与马铃薯产量的关系并非正相关,表明光合势发展动态符合总量要求合理和适度。
The results from the experiment of different potato densities under single cropping condition show that the optimum density for high yield is 5000～6000 plants/667m2 (2322～2450kg/667m2), the lower and higher leaf area coefficients are not the ideal densities for high yield as the leaf area coefficient increases with the density increment, and the total photosynthetic force increases with the density increment but there is no a positive correlation between the total photosynthetic force and yield, which shows that the development trend of total photosynthetic force required a reasonable and proper level.
出处
《贵州农业科学》
CAS
2003年第3期46-47,共2页
Guizhou Agricultural Sciences
基金
国家"十五"科技攻关"专用马铃薯优质高效生产技术研究与示范"项目内容
