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      2. 不同化肥農藥減施組合對水稻主要病蟲害發生及產量的影響
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        國家重點研發計劃項目(2016YFD0200807;2018YFD0301305);湖北省技術創新專項重大項目(2017ABA146)


        Effects of reduction combinations of fertilizer and pesticide on incidence of main pests and diseases and yield in rice
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          摘要:

          為探索化肥農藥減施融合使用技術,設計肥料和農藥兩因素三水平試驗,研究不同化肥農藥減施組合對水稻主要病蟲害發生及產量的影響。結果發現:減肥有減輕病蟲發生程度的趨勢,減藥有加重病蟲發生程度的趨勢;減肥可顯著影響水稻紋枯病、第4代稻飛虱、稻縱卷葉螟發生程度,減藥可顯著影響水稻紋枯病、第3和4代稻飛虱、稻縱卷葉螟發生程度,但兩者均對稻瘟病、稻曲病、二化螟發生程度無顯著影響。減肥30%時實測減產10.29%,對產量影響顯著;減肥低于20%時,綠色助劑替代處理和生物農藥替代處理實測產量比對照處理增產0.38%和2.49%,生物農藥替代和綠色助劑替代均可作為化學農藥減量的技術措施。

          Abstract:

          In order to explore the application of fertilizer and pesticide reduction,experiments with two factors and three levels were conducted to compare the effects of different fertilizer and pesticide reduction combinations on the incidence of main diseases and pests and yield in rice. The results showed that the reduction of fertilizer tended to reduce the incidence of disease and insects,whereas the reduction of pesticides had a tendency to increase the incidence of disease and insects. The incidence of rice sheath blight,fourth generation rice planthopper,and rice leaf borer was significantly affected by the reduction of fertilizer. By contrast,the incidence of rice sheath blight,third-and fourth-generation rice planthopper,and rice leaf borer was significantly affected by the reduction of pesticide. However,both reduction of fertilizer and pesticide had no significant effect on the incidence of rice blast,rice false smut,and rice borer. The reduction of fertilizer with approximately 30% significantly affected rice yield,leading to the harvest yield reduction of 10.29%. Compared with the control treatment,the reduction of fertilizer with less than 20% increased the harvest yield of green additive alternative treatment and biological pesticide alternative treatment 0.38% and 2.49%,respectively. It is indicated that biological pesticide and green additive alternative treatment can be used as technical measures for reducing the number of chemical pesticides.

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        張舒,趙華,呂亮,常向前,楊小林,楊利,盧殿友,陳明學.不同化肥農藥減施組合對水稻主要病蟲害發生及產量的影響[J].華中農業大學學報,2020,39(6):1-7

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        • 收稿日期:2020-06-08
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        • 在線發布日期: 2020-12-01
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