肖習明, 伍德春 周建華 張順陶 胡軍
摘要[目的] 研究不同深度施磷對小麥生長、經濟性狀、產量及磷肥利用率的影響關鍵詞小麥; 深施;利用率; 效應
中圖分類號S511文獻標識碼A文章編號0517-6611(2014)21-07015-02
Effects of Phosphate Fertilizer Applied in Deep Place of Root Layer on Wheat Yield and Utilization Rate of Phosphate Fertilizer
XIAO Ximing et al (Soil Fertilizer Workstation of Jingmen, Jingmen, Hubei 448000)
Abstract [Objective] The research aimed to study the effects of phosphate fertilizer applied in deep place of root layer on wheat growth, yield, economic characters, and the utilization rate of phosphate fertilizer. [Method] Phosphate fertilizer was applied on wheat root layer with different depth, and the effects of fertilizer application were studied. [Result] 0-5 cm fertilizer treatment had better effect on increasing yield, and the yield was 4 500 kg/hm2 increased by 42.8% compared CK. The treatment could improve the utilization rate of fertilizer, increased by 2.9 percentage point compared with that of minimal phosphate fertilizer application in 15-20 cm.[Conclusion]The best effect of the phosphate application was 0-5 cm layer.
Key words Wheat; Deep application; Utilization rate; Effect
土壤缺磷是世界范圍內普遍存在的問題[1]。長江中下游稻麥輪作區磷肥施用問題日益嚴重,造成磷肥利用率顯著下降,對農業生態環境構成潛在危險。這不僅增加成本,降低效益,而且導致土壤環境的污染,直接影響糧食持續增產、農業增效、農民增收和農產品質量安全。磷肥移動性小,筆者通過小麥磷肥根層不同深度施用試驗研究,為小麥合理施肥、預防過量施磷所造成的農田污染等提供理論依據。
1材料與方法
3結論與討論
試驗結果初步表明,與不施磷相比,各試驗田塊施磷增產效果顯著[4],但小麥施磷肥并不是越深效果越好,其中以0~5 cm施用效果最好。
參考文獻
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[2] 陳新平,張福鎖.通過“3414”試驗建立測土配方施肥技術指標體系[J].中國農技推廣,2006(4):36-39.
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