| 麦棉周年秸秆还田对棉花生物量与养分吸收的影响 |
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| 引用本文： | 张凡,周其军,关立,宋志均,杨春玲.麦棉周年秸秆还田对棉花生物量与养分吸收的影响[J].农学学报,2021,11(6):6-12. |
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| 作者姓名： | 张凡 周其军 关立 宋志均 杨春玲 |
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| 作者单位： | 安阳市农业科学院,河南安阳 455000 |
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| 基金项目： | 国家自然科学基金项目“麦(转基因抗虫)棉两熟周年秸秆还田的钾补偿效应及影响棉花产量形成的生态机制研究”(31371583) |
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| 摘 要： | 本文旨在研究麦棉周年秸秆还田和施钾对棉花产量、生物量和养分吸收的影响,对比分析秸秆还田钾肥替代的可行性。试验通过在棉花季设置小麦秸秆全量还田9000 kg/hm2、半量还田4500 kg/hm2、施钾量K150和K300;小麦季只在两个相应的秸秆还田处理上进行棉花秸秆还田7500 kg/hm2,不施钾肥;以两季均无秸秆和不施钾处理为对照。结果表明,两年试验中,麦棉秸秆全量还田处理较对照显著提高了棉花铃数、单铃重和皮棉产量,显著提高了棉花生物量和氮磷钾累积量,且全量还田处理的增产效果及促进养分吸收效应显著大于半量还田,与K150处理效果相当,但显著低于K300处理。秸秆还田对钾吸收的促进效应大于氮磷。麦棉周年秸秆还田延缓了棉花生育后期因缺钾引起的早衰,可以部分替代钾肥的施用。
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| 关 键 词： | 秸秆还田 产量 生物量 养分 |
| 收稿时间： | 2019-11-13 |
Effects of Wheat-Cotton Cycled Straw Returning on Biomass and Nutrient Uptake of Cotton |
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| Zhang Fan,Zhou Qijun,Guan Li,Song Zhijun,Yang Chunling.Effects of Wheat-Cotton Cycled Straw Returning on Biomass and Nutrient Uptake of Cotton[J].Journal of Agriculture,2021,11(6):6-12. |
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| Authors: | Zhang Fan Zhou Qijun Guan Li Song Zhijun Yang Chunling |
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| Institution: | Anyang City Academy of Agricultural Sciences, Anyang 455000, Henan, China |
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| Abstract: | The aim is to define the effect of wheat-cotton cycled straw returning on yield, biomass and nutrients accumulation of cotton, and to reveal the feasibility of potassium replacement. The application rate of wheat straw was designed as 4500 and 9000 kg/hm2(W4500 and W9000) respectively in cotton season and the application rate of cotton straw was designed as 7500 kg/hm2 in wheat reason. Additionally, K fertilizer rates were designed as K2O 150 and 300 kg/hm2 (K150 and K300) only in cotton season. The control was designed without straw returning and K fertilizer in both seasons. Results showed that compared with control, cycled total wheat-cotton straw returning significantly increased boll number, boll weight and lint yield of cotton. Biomass and NPK absorption of cotton were also significantly improved. The total wheat-cotton straw returning was more effective in promoting yield and nutrient uptake than the half wheat-cotton straw returning treatment, and was equal to K150 treatment, but significantly less effective than K300 treatment. Cycled wheat-cotton straw returning promoted K absorption much greater than N and P absorption. Cycled wheat-cotton straw returning could delay the premature senescence of cotton with potassium deficiency. So, chemical potassium fertilizer could be partly replaced by it. |
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| Keywords: | Straw Returning Yield Biomass Nutrient |
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