摘要
在高产条件下研究了鲁单 5 0不同密度群体的产量潜力 ,结果表明 ,群体产量潜力因密度提高而增加 ,同时 ,空秆率上升 ,败育粒数增加。在本试验条件下 ,获得最高产量为 9399 82kg/h ,适宜的密度范围是 7 5～8 1株 / 。最高产量密度时最大LAI为 5左右 ,生殖生长期LAD为 2 10 70万 ·d·hm-2 。收获后的秸秆有较高的饲用价值 ,子粒品质优良。
Yield potential and optimum density were studied in this paper,the results indicated that yield potential increased with plant density.The highest harvest yield was 9 399.82 kg/hm 2 in this experiment,and optimum density range was 7.5～8.1plants/.In this density,the optimum LAI of the canopy was 5 or so,and LAD between flowering and maturing maize was 2 107 000·d·hm -2 ,and the feeding value of straw and kernel were analyzed,the results turned out that straw of ludan 50 in maturing stape stayed green,and had higher feeding value,quality of kernel was excellent.
出处
《玉米科学》
CAS
CSCD
2000年第2期52-54,共3页
Journal of Maize Sciences
基金
山东省玉米"三○"工程资助项目
