中国麻业科学2026，Vol.48Issue(1)：32-40,9.
种植密度对红麻品种中杂红368抗倒伏性能的影响
Effect of Planting Density on Lodging Resistance of Kenaf Hybrid H368
摘要
Abstract
To clarify the lodging resistance of kenaf hybrid H368 that widely planted in the southern of Henan,five density levels were set to systematically study the changes and interactions of stem traits,mechanical properties and lodging rate of kenaf hybrid H368 under different planting densities.The re-sults showed that with the increase of density,the plant height,the height of center of gravity and the to-tal number of stem nodes of kenaf first increase and then decrease.The highest peak was reached at 18×104 plants/hm2.Stem node with the center of gravity,stem diameter,aboveground dry weight,inter-node dry weight,dry weigh per unit length,and ratio of internode diameter to length gradually de-creased;stem internode length gradually increased;the mechanical strength and puncture strength of the stem gradually decreased;the root lodging rate and standing stem rate decreased,but the stem lodging rate and breaking rate increased.The lodging rate was significantly negatively correlated with plant height,center of gravity height,total number of stem nodes,stem node with the center of gravity,punc-ture intensity,aboveground dry weight,internode dry weight,and unit length dry weight,while signifi-cantly positively correlated with stem internode length.Plant height,height of center of gravity,stem di-ameter,internode length,ratio of stem diameter to length and puncture intensity were important indica-tors reflecting kenaf lodging resistance.Especially internode length and stem puncture strength could be used as important reference indicators in breeding and production.The density should be controlled be-tween 18×104-21×104 plants/hm2 to ensure high and stable yield of kenaf in production.关键词
密度/红麻/茎秆性状/力学性状/抗倒伏性能Key words
density/kenaf/stem trait/mechanical properties/lodging resistance分类
农业科技引用本文复制引用
张丽霞,杨光,李梅,陈应霞,汪丽平,凌敬伟,丁迎欣,张威,史鹏飞,刘耀,程捷,张琳,丁丽,杜光辉,聂良鹏,吕玉虎..种植密度对红麻品种中杂红368抗倒伏性能的影响[J].中国麻业科学,2026,48(1):32-40,9.基金项目
财政部和农业农村部:国家麻类产业技术体系建设专项(CARS-16) （CARS-16）
