中国农学通报2025，Vol.41Issue(2)：23-27,5.
种植密度对籽粒机收玉米'鲁单608'生长发育和产量的影响
Effects of Planting Density on Growth and Yield of Machine Harvested Maize Variety'Ludan 608'
摘要
Abstract
In order to analyze the agronomic traits,yield and yield composition of machine-harvested maize under different density treatments,machine-harvested maize'Ludan 608'was used as the material.Five planting densities of 60000 plants/hm2(D1),69000 plants/hm2(D2),75000 plants/hm2(D3),82500 plants/hm2(D4)and 90000 plants/hm2(D5)were set to analyze their agronomic traits and yield.The results showed that plant height,ear height,lodging rate and bare plant rate increased with the increase of planting density,while double ear rate decreased.The highest maize yield was 11231.31 kg/hm2 with the planting density of 82500 plants/hm2.The LAI increased with the increase in planting density.The accumulation of dry matter in maize at both individual and population levels showed an'S-shaped'growth curve of'slow-fast-slow'.The dry matter amount of single plant decreased with the increase in planting density.In the range of D1-D4,dry matter amount of population increased with the increase of planting density.And it began to decrease when planting density was more than D4.关键词
玉米/'鲁单608'/籽粒机收/种植密度/农艺性状/产量/叶面积指数/干物质积累Key words
maize/'Ludan 608'/machine-harvested grain/planting density/agronomic traits/yield/LAI/dry matter accumulation分类
农业科技引用本文复制引用
刘春晓,汪黎明,董瑞,刘铁山..种植密度对籽粒机收玉米'鲁单608'生长发育和产量的影响[J].中国农学通报,2025,41(2):23-27,5.基金项目
中央引导地方科技发展专项资金项目"籽粒机收玉米新品种'鲁单608'全程机械化生产技术集成与示范"(YDZX2022095) （YDZX2022095）
山东省重点研发计划(重大科技创新工程)"高产多抗优质适宜机械化玉米新品种选育及其产业化"(2121LZGC014). （重大科技创新工程）
