本文選題：有機(jī)質(zhì)　切入點(diǎn)：全量氮　出處：《海南大學(xué)》2015年碩士論文

【摘要】：耕作模式是農(nóng)田生產(chǎn)中的最重要的生產(chǎn)措施。為探明不同耕作方式對(duì)澄邁地區(qū)蕉園土壤理化性質(zhì)的影響,本研究選地在海南省澄邁縣的香蕉主產(chǎn)區(qū)進(jìn)行。通過(guò)田間小區(qū)試驗(yàn),研究了主要耕作方式(深翻耕和免耕和秸稈還田)對(duì)香蕉主要生育期中蕉園土壤理化性質(zhì)的影響；分析了耕作方式對(duì)香蕉蕉園土壤的理化性質(zhì)的影響；并初步探究了三種耕作模式對(duì)蕉園土壤的培肥效應(yīng)和機(jī)理。主要研究結(jié)果如下：(1)不同耕作模式下,香蕉各時(shí)期蕉園土壤有機(jī)質(zhì)含量對(duì)比中,在各時(shí)期均呈現(xiàn)秸稈還田顯著高于不還田,在苗期、營(yíng)養(yǎng)生長(zhǎng)期、抽蕾期和成熟期分別高于不還田25.22%、38.67%、13.49%和18.06%;深耕措施在各時(shí)期基本高于免耕,在苗期、營(yíng)養(yǎng)生長(zhǎng)期、抽蕾期和成熟期分別可高于免耕15.31%、5.63%、13.95%和13.60%。(2)不同耕作模式下,香蕉各時(shí)期蕉園土壤全量氮含量對(duì)比中,在各時(shí)期均呈現(xiàn)秸稈還田顯著高于不還田,在苗期、營(yíng)養(yǎng)生長(zhǎng)期、抽蕾期和成熟期分別高于不還田40.20%、37.73%、21.36%和27.06%;深耕措施在各時(shí)期顯著高于免耕,在苗期、營(yíng)養(yǎng)生長(zhǎng)期、抽蕾期和成熟期分別可高于免耕20.56%、6.09%、10.93%和16.46%。(3)不同耕作模式下,香蕉各時(shí)期蕉園土壤有效磷含量對(duì)比中,在各時(shí)期均呈現(xiàn)秸稈還田顯著高于不還田,在苗期、營(yíng)養(yǎng)生長(zhǎng)期、抽蕾期和成熟期分別高于不還田169.96%、332.37%、476.37%和453.73%;深耕措施在各時(shí)期顯著高于免耕,在苗期、營(yíng)養(yǎng)生長(zhǎng)期、抽蕾期和成熟期分別可高于免耕56.06%、61.93%、69.35%和58.77%。(4)不同耕作模式下,香蕉各時(shí)期蕉園土壤有效鉀含量對(duì)比中,在各時(shí)期均呈現(xiàn)秸稈還田顯著高于不還田,在苗期、營(yíng)養(yǎng)生長(zhǎng)期、抽蕾期和成熟期分別高于不還田79.77%、33.68%、54.86%和76.55%;深耕措施在各時(shí)期顯著高于免耕,在苗期、營(yíng)養(yǎng)生長(zhǎng)期、抽蕾期和成熟期分別可高于免耕50.97%、22.55%、22.24%和5.01%。不同耕作模式下,香蕉各時(shí)期蕉園土壤PH對(duì)比中,不同耕作模式對(duì)土壤PH的影響并不顯著。(5)不同耕作模式下,香蕉各時(shí)期蕉園土壤容重對(duì)比中,深耕對(duì)土壤容重影響顯著,秸稈還田對(duì)土壤容重的影響并不顯著。免耕措施在各時(shí)期顯著高于深耕,在苗期、營(yíng)養(yǎng)生長(zhǎng)期、抽蕾期和成熟期分別可高于深耕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珮浜庝笉榪樼敯25.22%,38.67%,13.49%鍜，

本文編號(hào)：1704190