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    不同種類有機無機肥在小麥上的應用效果研究

    原文作者:陳船福、吳明興、朱玉萍等

     摘要 研究有機無機肥在小麥上的應用效果,結果表明:在只考慮肥料成本的情況下,在相同氮素水平條件下,20%有機無機復合肥(10-4-6)、20%有機無機復合肥(10-5-5)純效益與配方肥相仿,其次是16%有機無機復合肥(14-0-2)、16%有機無機復合肥(14-2-0),最后是15%有機無機復合肥(6-4-5)、15%有機無機復合肥(8-3-4);從肥料投入產出比來看,16%有機無機復合肥(14-0-2)、16%有機無機復合肥(14-2-0)最高,其次是有機無機復合肥(10-4-6)、20%有機無機復合肥(10-5-5),配方肥的投入產出比與15%有機無機復合肥(8-3-4)相仿。靖江市小麥大面積生產上宜推廣含氮量為10%有機無機肥。宿遷谷浪多肥業有限公司生產的15%有機無機肥(8-4-3)存在致小麥倒伏的危險。
       關鍵詞 有機無機肥;小麥;底施
      中圖分類號 s512.1;s147.2 文獻標識碼 a 文章編號 1007-5739(2013)20-0018-02
      通過規范的田間試驗,對申報肥料登記產品進行肥效及安全性試驗,從產量、品質、抗逆性、安全性等方面對申報產品做出肥效和安全性綜合評價,為肥料登記提供依據,根據省站安排,在靖江市進行7種不同有機無機復合肥田間試驗,以驗證不同有機無機肥在小麥生產上應用的實際效果[1-3],現將試驗結果報告如下。[論文網] 
       1 材料與方法
      1.1 試驗地概況
      試驗在靖江市現代農業研究所承包田內(生祠鎮生祠村)進行,供試土壤質地為中壤土,土種為油砂土,試驗前取土樣測定,含有機質23.2 g/kg、全氮1.28 g/kg、有效磷16.4 mg/kg、速效鉀76 mg/kg,ph值7.7,肥力中上等。www.zhidachem.com
       1.2 試驗材料
      供試肥料種類見表1,供試作物為揚麥13號。
      1.3 試驗設計
      試驗設9個處理,每種有機無機復合肥為一個處理,以40%配方肥作對照(ck1),以不施肥作空白對照(ck2)。具體見表1。3次重復,隨機區組排列,小區面積20 m2。
       1.4 試驗過程
      2012年11月2日播種,2013年6月1日收割。用種量150 kg/hm2,基本苗270萬株/hm2左右。施用復混肥料和有機肥作基肥,尿素用作追肥。氮用量與ck1保持一致,施配方肥600 kg/hm2,有機無機肥按氮量折算成96.0 kg/hm2。追肥及其他田間措施同ck1。其他農藝措施一致。
       2 結果與分析
      2.1 不同處理對小麥生物學性狀的影響
      從表2可以看出,在基本苗一致的情況下,小麥的分蘗苗、高峰苗以ck1最高,與ck2相比,分別增加了151.2萬、292.8萬個/hm2,與處理1到處理7相比,增加16.20萬~32.70萬個/hm2;有效穗數以處理3最高,ck1、處理6、7相仿,處理1、4、5相仿;每穗粒數除ck2外,以處理3最低,其他處理相仿;千粒重以處理3最低。據田間考察記載,處理3的3個重復均有10%~15%面積出現倒伏。從理論產量來看,處理3、ck2與其他處理比,產量較低,ck1產量最高,處理1、2、5產量相仿,處理6與處理7相仿。
       2.2 不同處理對小麥產量的影響
      從表3可以看出,ck1產量最高,有機無機肥養分為20%,處理6和處理7次之,有機無機肥養分為15%(除處理5有倒伏外)。處理1、2緊隨其后,有機無機肥養分為16%,處理6、7產量居末。施用小麥配方肥的ck1與ck2相比增產3 660 kg/hm2,增加98.4%;與施用有機無機肥20%的處理6、7相比,增產250、265 kg/hm2,增加3.5%、3.7%;與施用有機無機肥15%的處理1、2相比,增產435、405 kg/hm2,增加6.3%、5.8%;與施用有機無機肥16%的處理4、5相比,增產495、705 kg/hm2,增加7.2%、10.6%。處理3由于3個重復均出現10%~15%面積倒伏,造成減產。試驗結果表明:在小麥生產上一生用肥中按氮肥用量相同的情況下,配方肥比有機無機肥施用能提高產量,平均增產幅度在3.5%~8.9%之間。
       2.3 產量統計分析結果
      從表4可以看出,在f=0.05水平下,ck1、處理6與處理7之間差異不顯著;處理1、2與處理4之間差異不顯著;ck1與處理1、2、4差異顯著,處理6、7與處理3、5之間差異顯著。說明在靖江市生產上施用20%有機無機復合肥(10-4-6)、20%有機無機復合肥(10-5-5)代替配方肥,產量差異不顯著。
       2.4 效益分析
      從表5可以看出,該試驗在只考慮肥料成本的情況下,產量效益以ck1最高,處理6、7次之。ck1純收益最高,為14 082.0元/hm2,與ck2相比增加5 898.0元/hm2,肥料投入產出比為1∶7.54;處理6、7次之,純收益分別為13 940.0、13 907.0元/hm2,與ck2相比分別增收5 756、5 723元/hm2,與ck1相比分別減收142.0、175.0元/hm2,肥料投入產出比為1∶8.98、1∶8.97;處理4、5純效益再次之,與ck2相比純收益分別增加5 545.5、5 083.5元/hm2,肥料投入產出比為1∶10.69、1∶10.36。
       試驗結果表明:在相同氮素水平條件下,有機無機肥含氮量為10%的處理6、7純效益與配方肥相仿,其次是含氮量為14%的處理4、5,最后是含氮量為6%和8%的處理1、2;從肥料投入產出比來看,有機無機肥含氮量為14%的處理4、5最高,其次是含氮量為10%的處理6、7,配方肥的投入產出比與含氮量為8%的處理2相仿。
       3 結論與討論
      (1)在小麥全生育期用肥中在氮肥用量相同的情況下,配方肥比有機無機肥施用能提高產量,平均增產幅度在3.5%~8.9%之間;施用有機無機肥能提高小麥的千粒重,增幅在0.3%~2.5%之間。
       (2)在只考慮肥料成本的情況下,在施用相同氮素水平條件下,20%有機無機復合肥(10-4-6)、20%有機無機復合肥(10-5-5)的純效益與配方肥相仿,其次是16%有機無機復合肥(14-0-2)、16%有機無機復合肥(14-2-0),最后是15%有機無機復合肥(6-4-5)、15%有機無機復合肥(8-3-4);從肥料的投入產出比來看,16%有機無機復合肥(14-0-2)、16%有機無機復合肥(14-2-0)最高,其次是20%有機無機復合肥(10-4-6)、20%有機無機復合肥(10-5-5),配方肥的投入產出比與15%有機無機復合肥(8-3-4)相仿。靖江市小麥大面積生產上適宜推廣含氮量為10%的有機無機肥[4-6]。
       (3)宿遷谷浪多肥業有限公司生產的15%有機無機肥(8-4-3)存在致小麥倒伏的危險。
      4 參考文獻
      [1] 袁冬梅,劉志琴,陳正東.有機肥料田間肥效試驗研究[j].現代農業科技,2011(20):281-282.
      [2] 俞祿,戴波.有機肥料在小麥上的應用效果研究[j].現代農業科技,2011(18):51,54.
      [3] 俞祿.有機無機復混肥在小麥上的應用效果研究[j].現代農業科技,2012(3):108,112.
      [4] 袁天佑,褚小軍,林楓,等.金正大緩控釋肥在小麥上的應用效果研究[j].現代農業科技,2013(14):216-217.
      [5] 彭雪松.河南省小麥玉米化肥施用狀況與應用效果研究[d].鄭州:河南農業大學,2012.
      [6] 周祥,辛海寧,胡志明,等.沿海地區啤麥基施鉀肥效應及適宜用量[j].大麥科學,1998(4):23-24.

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