热带作物学报2024，Vol.45Issue(2)：330-339,10.DOI:10.3969/j.issn.1000-2561.2024.02.013
种植密度和深度对甘蔗产量及抗倒伏的影响
Effects of Planting Density and Depth on Yield and Lodging Resistance in Sugarcane
摘要
Abstract
Reasonable planting density and depth are the common cultivation techniques to increase sugarcane yield per unit area.However,the effect on sugarcane lodging is often neglected when the yield is increased.Sugarcane variety Zhongtang 3 was used as the experimental material to determine the effect of different planting density and depth on the yield and lodging.Four planting density 3.0,4.5,6.0 and 7.5 buds/m2 and two planting depth of shallow planting(30 cm)and deep planting(40 cm)were designed in the experiment.The agronomic characters,lodging related index(root lodging and stalk lodging)and yield of sugarcane were measured.The results showed that as the growth period of sugarcane continued to advance,the safety factor of sugarcane root and stem gradually decreased,and the risk of root lodging and stem lodging of sugarcane was higher at 180 days after planting,which was in a sensitive period.When the planting density increased from 3 buds/m2 to 6 buds/m2,sugar yield(+32% )and yield(+36% )of sugarcane were significantly increased,and the stem lodging resistance of sugarcane was also increased.However,when the planting density was further increased to 7.5 buds/m2,the sugar yield and yield did not increase significantly,but the risk of root lodging was increased.Compared with planting depth of 30 cm,planting depth of 40 cm had a tendency to increase sugar yield(+2.8% )and yield(+4.8% ),although there was no significant difference between them.Therefore,considering sugar yield,yield and lodging resistance of sugarcane,we believe that planting depth of 40 cm and planting density of 6 buds/m2 can improve lodging resistance of sugarcane while ensuring yield and sugar yield.关键词
甘蔗/种植深度/种植密度/倒伏/产量Key words
sugarcane/planting depth/planting density/lodging/production分类
农业科技引用本文复制引用
刘富成,李照杰,蔡文伟,吴伟..种植密度和深度对甘蔗产量及抗倒伏的影响[J].热带作物学报,2024,45(2):330-339,10.基金项目
国家自然科学基金项目(No.32060442). （No.32060442）
