粉垄耕作促进甘蔗根系生长、养分吸收及增产  

Fenlong Tillage Promotes Sugarcane Root Growth,Nutrient Absorp-tion and Yield Increase

作　　者：赵钧洋 覃树涛 常媛 李帆 卢干培 蒋代华[1] 何冰[1] ZHAO Junyang;QIN Shutao;CHANG Yuan;LI Fan;LU Ganpei;JIANG Daihua;HE Bing(College of Agriculture,Guangxi University,Nanning,Guangxi 530004,China)

机构地区：[1]广西大学农学院,广西南宁530004

出　　处：《热带作物学报》2022年第3期529-538,共10页Chinese Journal of Tropical Crops

基　　金：广西科技重大专项(桂科AA17204037-3)。

摘　　要：为探究粉垄耕作不同深度对新植蔗和宿根蔗根系形态发育、养分吸收及产量差异,探索适合的粉垄耕作深度,为推广粉垄耕作技术提供理论依据。本研究以‘桂糖42号’为供试材料进行田间试验,设立常规浅耕、粉垄浅耕、常规深耕和粉垄深耕4个处理。结果表明:粉垄浅耕处理下,新植蔗产量比常规浅耕和常规深耕处理分别提高了24.9%和12.4%;宿根蔗产量比常规深耕处理提高了9.7%。相比于粉垄深耕,无论是新植蔗还是宿根蔗,粉垄浅耕均表现出一定的增产趋势。除粉垄深耕处理的新植蔗糖分略高于其他处理外,其余处理新植蔗和宿根蔗的茎长、茎径和糖分均无显著差异。与常规旋耕相比,粉垄耕作处理下新植蔗分蘖期根系长度、表面积和体积、侧根分支比例,以及中根、粗根比例大小规律均为粉垄耕作大于常规耕作。粉垄浅耕处理下新植蔗茎和叶部氮、磷、钾含量高于粉垄深耕,而根部氮、钾含量低于粉垄深耕。粉垄浅耕处理宿根蔗茎和叶部钙、硫、镁、锌和锰5种中微量元素低于粉垄深耕,根部5种中微量元素含量与粉垄深耕差异不显著。结果显示,粉垄耕作通过促进甘蔗根系生长发育,改善根系形态,促进了氮磷钾等养分元素的吸收,最终提高了甘蔗产量,并且粉垄浅耕的增产效果好于粉垄深耕。In order to explore the effects of different depth of Fenlong tillage on root morphological development,nu-trient absorption and yield of newly planted sugarcane and perennial sugarcane,and to explore the suitable depth of Fenlong tillage,so as to provide a theoretical basis for popularizing Fenlong tillage technology.In this study,the field experiment was conducted with‘Guitang 42’as the test material.Four treatments were established:conventional shal-low tillage,Fenlong shallow tillage,conventional deep tillage and Fenlong deep tillage.The results show that:Under the treatment of Fenlong shallow ridge,the yield of newly planted sugarcane was increased by 24.9%and 12.4%respec-tively compared with the treatment of conventional shallow tillage and the conventional deep tillage;the yield of ratoon cane was increased by 9.7%compared with the conventional deep tillage treatment.Compared with Fenlong deep tillage,whether it is newly planted sugarcane or ratoon cane,Fenlong shallow ridge shows a certain trend of increasing in yield.Except that the sugar content of newly planted sugarcane in the treatment of Fenlong deep tillage was slightly higher than that of other treatments,there was no significant difference in stem length,stem diameter and sugar content be-tween newly planted sugarcane and ratoon sugarcane.Compared with conventional shallow tillage,the root length,sur-face area and volume of newly planted sugarcane at the tillering stage,the proportion of lateral roots and branches,and the ratio of middle roots and thick roots under Fenlong tillage are all larger than conventional tillage.The contents of N,P and K in the stems and leaves of newly planted sugarcane under the treatment of Fenlong shallow tillage were higher than those under Fenlong deep tillage,while the contents of N and K in roots were lower than those under Fenlong deep tillage.The five types of calcium,sulfur,magnesium,zinc and manganese in the stems and leaves of ra-toon cane under the treatment of Fenlong shallow tillage were lower than th

关 键 词：粉垄 甘蔗 根系形态 养分吸收 产量 

分 类 号：S566.1[农业科学—作物学]