络合型硼肥对棉花增产效应的研究

Study on Yield Effects of a Chelated B Fertilizer on Cotton Crop

【目的】研究棉花施用络合型硼肥肥料效应,为北疆棉田科学合理施硼肥提供理论依据和方法。【方法】通过大田试验,设6种处理,采用叶面喷施普通硼肥和络合型硼肥,研究不同硼肥对棉花产量的影响。【结果】施用硼肥和络合型硼肥均能增加棉花的单株结铃数及单铃重,提高棉花产量;其中采用叶面喷施络合型的硼对棉花增产效果最好,施硼处理棉花产量增加4.49%～13.36%,施络合型硼棉花增产最高达到20.39%;在棉花整个生长发育过程中,各处理与对照相比干物质积累量升高,其中施用络合型硼的处理棉花根系、棉壳、籽粒干物质重较对照达显著水平。【结论】叶面施络合型的硼肥更有助于棉花生殖器官的生长发育,络合型硼肥的增产作用显著高于普通硼肥。

【Objective】This paper studied yield-promoting effects after chelated-B fertilizer was applied in cotton crop in Xinjiang in the hope for propose of applying a new approach for microelements application in cotton.【Method】 Six treatments were setup in a field experiment,commercial B fertilizer and chelated B fertilizer were applied to cotton plant by foliar application.【Result】Both commercial B and chelated B increased the number of bolls per plant,boll weight and cotton yield.It was found that commercial B fertilizer showed 4.49%-13.36% yield increasing effects,while chelated B fertilizer showed the best effects on cotton yield,20.39% yield-icreasing effects was observed in the study.In the growth process of cotton,compared with control treatments,cotton dry matter weight of all treatments increased,and the dry matter weight of root,boll hull and seed increased significantly.【Conclusion】Chelated B fertilizer is more helpful for cotton reproductive organ＇s growth and yield formation,showing it is a better option for cotton B fertilizer in practice.