不同时期绿豆与甘蔗套种及秸秆还田模式研究

发布时间：2018-06-30 17:46

本文选题：绿豆 + 甘蔗　；参考：《西南农业学报》2017年11期

【摘要】：【目的】通过探讨甘蔗/绿豆套种模式及绿豆秸秆还田的肥力效应,寻求最佳绿豆播种、秸秆还田期。【方法】开展大田试验,采用二因素裂区设计,研究不同处理对甘蔗农艺性状、产量及品质的影响。【结果】套种(甘蔗播种期播种绿豆+绿豆结荚期还田)处理的绿豆干物质、氮磷钾养分累积量最高;绿豆秸秆还田后,初期秸秆表面覆盖处理和深埋处理的氮、磷、钾养分降解率基本相同,后期表面覆盖处理的降解率高于深埋处理;套种绿豆对甘蔗出苗、分蘖有一定负面影响,且套种时间越早影响越大;套种绿豆各处理的绿豆秸秆在任何时期还田都可提高甘蔗株高、茎径、单茎重,甘蔗播种期播种绿豆+绿豆结荚期还田处理的甘蔗产量最高并显著高于其他处理,套种绿豆对蔗糖锤度无显著影响。【结论】甘蔗套种绿豆和绿豆秸秆还田可提高土壤肥力和甘蔗产量,且对蔗糖锤度无显著影响,以甘蔗播种期播种绿豆和绿豆结荚期进行表面覆盖还田处理效果最佳。
[Abstract]:[objective] to explore the interplanting pattern of sugarcane / mung bean and the fertility effect of mung bean straw returning to the field, and to find out the best seeding of mung bean and the returning stage of straw. [methods] the field experiment was carried out, and the two-factor split zone design was adopted. The effects of different treatments on agronomic characters, yield and quality of sugarcane were studied. The degradation rate of nitrogen, phosphorus and potassium was basically the same in the early straw surface mulching treatment and deep burying treatment, and the degradation rate of late surface mulching treatment was higher than that of deep buried treatment, and interplanting mung bean had some negative effects on the emergence and tillering of sugarcane. The earlier the interplanting time, the greater the effect, the higher the height, the diameter of stem and the weight of single stem, the higher the plant height, the diameter of stem and the weight of single stem could be increased when the mung bean straw was returned to the field at any time. The yield of sugarcane was the highest and significantly higher than that of other treatments. [conclusion] interplanting mung bean and mung bean straw can increase soil fertility and sugarcane yield, but have no significant effect on sucrose Brix. [conclusion] Sugarcane interplanting mung bean and mung bean straw can increase soil fertility and sugarcane yield, but have no significant effect on sucrose Brix. The effect of surface mulching and returning to field was best when sugarcane was seeded at sowing stage and mung bean was planted at pod-setting stage.
【作者单位】：广西大学农学院/广西大学亚热带农业生物资源保护与利用国家重点实验室;广西农业科学院农业资源与环境研究所;广西农业科学院甘蔗研究所/中国农业科学院甘蔗研究中心/农业部广西甘蔗生物技术与遗传改良重点实验室/广西甘蔗遗传改良重点实验室;
【基金】：广西自然科学基金重点项目(2014GXNSFDA118015);广西自然科学基金(2016GXNSFCA380008) 广西科学研究与技术开发计划项目(桂科攻1598016-13,桂科合15104001-25) 国家绿肥产业技术体系项目(CARS-22)
【分类号】：S141.4;S522;S566.1

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