内蒙古民族大学学报（自然科学版）2024，Vol.39Issue(2)：26-31,6.DOI:10.14045/j.cnki.15-1220.2024.02.005
种植密度和施氮量对中吉602大豆产量构成因素的影响
Effects of Planting Density and Nitrogen Application Rate on Yield Components of Soybean Variety Zhongji 602
摘要
Abstract
Using the soybean variety Zhongji 602 as the experimental material,the effects of different planting densities on the main agronomic traits and yield components were studied,aiming to determine the optimal planting density and nitrogen fertilizer application rate for this variety.Four density treatments were set at 350000,400000,450000 and 500000 plants/hm2,respectively.Under a planting density of 400000 plants/hm2,four different nitro-gen application rates were set at 0,30,60 and 120 g/m2,respectively.The results showed that with the increase of density,the plant height of Zhongji 602 increased,while stem diameter,main stem nodes,the pods number per plant,seeds perplant and 100-seed weight also decreased.Yield initially increased and then decreased with increasing density,reaching the highest value of 5143.8 kg/hm2 at the density 400000 plants/hm2.Under the planting density of 400000 plants/hm2,plant height and number of effective pods per plant increased with the increase in nitrogen application rate,while seed weight per plant showed an initial increase followed by a decrease trend.Nitrogen appli-cation had no significant effect on main stem nodes and 100-seed weight.Protein content reached its highest value of 35.1%at a nitrogen application rate of 120 g/m2,while yield reached its highest value of 5301.2 kg/hm2 at a nitro-gen application rate of 60 g/m2.The optimum planting density of Zhongji 602 in Tongliao area is 400000 plants/hm2,and the application of 60 g/m2 nitrogen fertilizer can increase yield and obtain soybean with high protein content.关键词
大豆/种植密度/施氮量/产量Key words
soybean/planting density/nitrogen application rate/yield分类
农业科技引用本文复制引用
孙浩楠,曹霞,申晴,邱红梅,孟凌晓,李志刚..种植密度和施氮量对中吉602大豆产量构成因素的影响[J].内蒙古民族大学学报（自然科学版）,2024,39(2):26-31,6.基金项目
国家民委科尔沁沙地生态开放项目(MDK2021084,MDK2021085) （MDK2021084,MDK2021085）
内蒙古自治区自然科学基金项目(2021LHMS03010) （2021LHMS03010）
