肖習(xí)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(duì)小麥生長(zhǎng)、經(jīng)濟(jì)性狀、產(chǎn)量及磷肥利用率的影響關(guān)鍵詞小麥; 深施;利用率; 效應(yīng)
中圖分類(lèi)號(hào)S511文獻(xiàn)標(biāo)識(shí)碼A文章編號(hào)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(nèi)普遍存在的問(wèn)題[1]。長(zhǎng)江中下游稻麥輪作區(qū)磷肥施用問(wèn)題日益嚴(yán)重,造成磷肥利用率顯著下降,對(duì)農(nóng)業(yè)生態(tài)環(huán)境構(gòu)成潛在危險(xiǎn)。這不僅增加成本,降低效益,而且導(dǎo)致土壤環(huán)境的污染,直接影響糧食持續(xù)增產(chǎn)、農(nóng)業(yè)增效、農(nóng)民增收和農(nóng)產(chǎn)品質(zhì)量安全。磷肥移動(dòng)性小,筆者通過(guò)小麥磷肥根層不同深度施用試驗(yàn)研究,為小麥合理施肥、預(yù)防過(guò)量施磷所造成的農(nóng)田污染等提供理論依據(jù)。
1材料與方法
3結(jié)論與討論
試驗(yàn)結(jié)果初步表明,與不施磷相比,各試驗(yàn)田塊施磷增產(chǎn)效果顯著[4],但小麥?zhǔn)┝追什⒉皇窃缴钚Ч胶?,其中?~5 cm施用效果最好。
參考文獻(xiàn)
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