不同耕作方式对蕉园耕层土壤理化性质的影响

发布时间：2018-04-03 07:25

  本文选题：有机质　切入点：全量氮　出处：《海南大学》2015年硕士论文

【摘要】：耕作模式是农田生产中的最重要的生产措施。为探明不同耕作方式对澄迈地区蕉园土壤理化性质的影响,本研究选地在海南省澄迈县的香蕉主产区进行。通过田间小区试验,研究了主要耕作方式(深翻耕和免耕和秸秆还田)对香蕉主要生育期中蕉园土壤理化性质的影响；分析了耕作方式对香蕉蕉园土壤的理化性质的影响；并初步探究了三种耕作模式对蕉园土壤的培肥效应和机理。主要研究结果如下：(1)不同耕作模式下,香蕉各时期蕉园土壤有机质含量对比中,在各时期均呈现秸秆还田显著高于不还田,在苗期、营养生长期、抽蕾期和成熟期分别高于不还田25.22%、38.67%、13.49%和18.06%;深耕措施在各时期基本高于免耕,在苗期、营养生长期、抽蕾期和成熟期分别可高于免耕15.31%、5.63%、13.95%和13.60%。(2)不同耕作模式下,香蕉各时期蕉园土壤全量氮含量对比中,在各时期均呈现秸秆还田显著高于不还田,在苗期、营养生长期、抽蕾期和成熟期分别高于不还田40.20%、37.73%、21.36%和27.06%;深耕措施在各时期显著高于免耕,在苗期、营养生长期、抽蕾期和成熟期分别可高于免耕20.56%、6.09%、10.93%和16.46%。(3)不同耕作模式下,香蕉各时期蕉园土壤有效磷含量对比中,在各时期均呈现秸秆还田显著高于不还田,在苗期、营养生长期、抽蕾期和成熟期分别高于不还田169.96%、332.37%、476.37%和453.73%;深耕措施在各时期显著高于免耕,在苗期、营养生长期、抽蕾期和成熟期分别可高于免耕56.06%、61.93%、69.35%和58.77%。(4)不同耕作模式下,香蕉各时期蕉园土壤有效钾含量对比中,在各时期均呈现秸秆还田显著高于不还田,在苗期、营养生长期、抽蕾期和成熟期分别高于不还田79.77%、33.68%、54.86%和76.55%;深耕措施在各时期显著高于免耕,在苗期、营养生长期、抽蕾期和成熟期分别可高于免耕50.97%、22.55%、22.24%和5.01%。不同耕作模式下,香蕉各时期蕉园土壤PH对比中,不同耕作模式对土壤PH的影响并不显著。(5)不同耕作模式下,香蕉各时期蕉园土壤容重对比中,深耕对土壤容重影响显著,秸秆还田对土壤容重的影响并不显著。免耕措施在各时期显著高于深耕,在苗期、营养生长期、抽蕾期和成熟期分别可高于深耕11.27%、17.32%、14.39%和2.89%。
[Abstract]:Farming pattern is the most important production measure in farmland production.In order to investigate the effects of different tillage methods on soil physical and chemical properties of plantain orchard in Chengmai area, this study was conducted in the main banana production area of Chengmai County, Hainan Province.The effects of main tillage methods (deep tillage, no-tillage and straw returning) on the soil physical and chemical properties of banana plantain during the main growth period were studied, and the effects of tillage methods on the soil physical and chemical properties of banana plantain were analyzed.The effect and mechanism of three tillage modes on soil fertility in banana orchard were studied.The main results were as follows: (1) under different cultivation models, the content of organic matter in banana plantain soil was significantly higher than that in non-returning field in each stage, and in seedling stage and vegetative growth stage, the soil organic matter content in banana garden was significantly higher than that in non-returning field in each stage.鎶借暰鏈熷拰鎴愮啛鏈熷垎鍒�楂樹簬涓嶈繕鐢�25.22%,38.67%,13.49%鍜，

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