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    農業論文

    秸稈腐熟劑品種篩選試驗總結

    時間:2019年07月01日 所屬分類:農業論文 點擊次數:

    摘要:為了探索土壤有機質提升技術,驗證不同秸稈腐熟劑產品使用效果,篩選出適宜當地氣候條件和耕作制度的秸稈腐熟劑品種。針對2014年晚稻貴城鎮實施了秸稈腐熟劑品種篩選試驗,總結試驗成果。從試驗結果可知,通過秸稈還田能全面提升水稻種植土壤有機質含量

      摘要:為了探索土壤有機質提升技術,驗證不同秸稈腐熟劑產品使用效果,篩選出適宜當地氣候條件和耕作制度的秸稈腐熟劑品種。針對2014年晚稻貴城鎮實施了秸稈腐熟劑品種篩選試驗,總結試驗成果。從試驗結果可知,通過秸稈還田能全面提升水稻種植土壤有機質含量,提高土壤肥力,發揮出農業效應,還能使得腐熟劑作用有效發揮,不同腐熟劑之間應用價值存在較大差異。

      關鍵詞:秸稈腐熟劑;品種篩選;試驗

    農業科技通訊

      本文主要對秸稈腐熟劑品種篩選試驗進行分析,確立試驗設置地點、試驗內容以及具體試驗過程,明確觀察結果,對推動區域農業發展具有重要作用。秸稈腐熟劑的主要作用是進一步加快秸稈等廢棄物腐熟程度,使得秸稈中各類有機質能進行有效轉換,轉為P、K等植物生長過程中所必須的營養物質,還能產生較多微生物,對土壤基本土質進行改善,全面提升植物原有的抗逆性,能對農作物生長品質進行改善,推動現代化農業長遠發展。

      1試驗地點

      試驗設在港北區貴城鎮震塘村農戶雷新鳳的水稻田,田塊面積0.13hm2。

      2試驗設置

      試驗設6個小區,3次重復,處理隨機排列。各小區其它肥料的施肥量保持一致的水平。

      3試驗實施

      稻草全量還田區+中標腐熟劑產品一、稻草全量還田區+腐熟劑產品二、稻草全量還田區+腐熟劑產品三、稻草全量還田區+腐熟劑產品四腐熟劑畝用量都是2kg/667m2,秸稈全量按平均400kg/667m2計,折算成小區用量[1]。

      3.1供試品種

      供試的水稻品種為T98優207。

      3.2試驗小區設置

      2014年7月28—30日整田基,處理間用薄膜包裹田基,各小區的面積為30.6m2。

      3.3播種

      在2014年7月12日播種,7月31日施腐熟劑、秸稈還田,8月1日插田,行距為23cm,株距為16cm,每小區22行,每行37株,共814株。

      3.4施肥

      2014年7月31日稻草還田時施基肥,每667m施氮肥8.72kg,磷肥26.7kg,鉀肥9kg。8月11日施追肥,每667m2施氮肥13.08kg,鉀肥6kg。

      4觀察與記載

      從2014年8月4日起開始,每3d進行1次秸稈腐熟程度。

      4.1對秸稈腐熟程度進行觀察和記錄

      結合秸稈顏色變化、氣味不同、手感軟化程度能對其實際腐熟程度進行全面觀察[2]。秸稈顏色(分黃、微黃、褐黃、黑黃)時,觀察時間是8月4日,秸稈顏色是褐黃色。8月7日,秸稈顏色是黑黃色。8月11日、8月14日、8月18日、8月21日均是黑黃色。氣味(分霉味、氨味、酒味、腐爛味),8月4日是氨味,8月7日是腐爛味,8月11日是腐爛味,8月14日是腐爛味,8月18日是腐爛味,8月21日是無臭味。手感軟化程度(分硬、微軟、軟、腐爛),觀察時間是8月4日微軟,8月7日微軟,8月11日軟,8月14日軟,8月18日軟,8月21日軟。

      4.2在分蘗量觀察栽種可知,不同時間段分蘗量存在較大差異

      比如2014年8月14日第1次、第2次、第3次、第4次、第5次、第6次觀察分別為4.1、3.5、4.2、4.4、4.4、4.2。8月18日第1次、第2次、第3次、第4次、第5次、第6次觀察分蘗量分別為6.1、6.0、6.1、6.2、6.2、6.3。8月21日第1次、第2次、第3次、第4次、第5次、第6次觀察分蘗量分別是7.2、7.1、7.2、7.0、7.1、7.1。8月25日第1次、第2次、第3次、第4次、第5次、第6次觀察分蘗量分別是7.9、7.6、7.9、8.2、8.1、8.2。8月28日第1次、第2次、第3次、第4次、第5次、第6次觀察分蘗量分別是6.4、6.3、6.6、6.7、6.5、6.5。第1次、第2次、第3次、第4次、第5次、第6次觀察成穗率分別是81%、82.9%、83.5%、81.7%、80.2%、79.3%。

      4.3生育期記載

      在生育期記載過程中,主要是經歷了6個階段。回青期是8月8日、分蘗初期是在8月18日、分蘗盛期是8月24日、拔節期是8月25日、幼穗分化初期是8月28日、抽穗期是在9月20日、成熟期是10月14日、收獲期主要是在10月14日。

      5試驗結果與分析

      本試驗通過對不同處理區域秸稈腐爛時間、土壤理化性狀、養分成果、考種結果等進行對比分析,能驗證各個品種的秸稈腐熟劑品種基本應用成效,可以篩選出適應當地氣候條件以及耕作制度的秸稈腐熟劑品種。結合秸稈腐熟劑特點,在不同區域添加不同種類的秸稈腐熟劑,對提升作物產量以及優化土壤性能等方面都具有重要作用。為了能對試驗成果進行驗證,要對秸稈腐熟時間、稻谷干粒重、株高、土壤理化性狀等各項指標進行分析判斷。

      施用不同秸稈腐熟劑,對產量的影響還是較大的,通過本次試驗6個小區的對比,從收獲時農藝性狀考種、產量記載表可以看出:理論產量和田間測產產量最高的均是處理4(稻草全量還田區+腐熟劑產品二),處理3(草全量還田區+中標腐熟劑產品一)排第2。處理1(稻草不還田區)和處理2(不加腐熟劑稻草全量還田)理論產量和田間測產產量分別排在后2名。

      6小結

      由于本試驗選種的水稻品種屬中早熟品種,生育期較短,25d即進入拔節期,而稻草在田間的腐爛時間需25d,不排除對試驗的結果有一定的影響。采用秸稈還田,不施腐熟劑的比稻草不還田的減產:處理2(不加腐熟劑秸稈還田)比處理1(對照,無秸稈還田)減產2.02%。施用秸稈腐熟劑+秸稈還田更利于增產:處理4(稻草全量還田區+腐熟劑產品二),比處理1(對照,無秸稈還田)增產6.00%,比處理2(不加腐熟劑稻草全量還田)增產8.19%。

      由此推論:腐熟劑產品二是當地水稻生產的最適合的秸稈腐熟劑品種;秸稈還田+腐熟劑產品二,在當地示范推廣,對水稻增產增收將起到積極的作用,能推動現代化農業可持續發展,適應生態農業發展要求。

      參考文獻

      [1]吳志勝,王英日.秸稈腐熟劑品種篩選試驗初報[J].農業科技通訊,2011(7):49-51.

      [2]楊瑞兵,賴石生.不同秸稈腐熟劑品種篩選試驗[J].安徽農學通報,2016,22(8):62-62,64.

      相關刊物推薦:《農業科技通訊》(月刊)創刊于1972年,由農業部主管,中國農業科學院主辦;中央級農業實用綜合、技術、信息期刊,創刊較早(1972年);國內外公開發行,發行量大、影響面廣;全國農業優秀期刊(五次獲獎)、核心期刊。

      

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