半干旱区玉米行距调整增密对群体冠层结构及产量的影响
为增加玉米的种植密度,构建不同的群体冠层结构,以玉米不同行距配置为基础,研究了乳熟期玉米群体的光能利用情况,分析了不同行距配置对冠层结构及产量、产量构成因素的影响。结果表明,产量与群体消光系数达到显著相关,且为负相关。在吉林省半干旱区玉米行距70-30cm和行距80-30cm配置下玉米群体对光能资源的利用达到最佳,且有效提高玉米群体产量,增产分别达到8.06%和22.82%。
英文摘要:
In order to increase the planting density of maize and construct canopy structures of different groups. The utilization of light energy in the maize population during milk-ripe stage was studied. The effects of different row spacing on canopy structure, yield and yield composition were analyzed. The results showed that the yield and group extinction coefficient were correlated significantly, and it was negative correlation. Maize row spacing of 70-30cm and row spacing of 80-30cm in semi-arid area of Jilin Province have the best utilization of environmental resources, and can effectively increase the maize population yield, the increase was 8.06% and 22.82%, respectively.
查看全文
;
