缓释复合肥不同施用次数对甘蔗产量及蔗糖分的影响

在大田条件下,以ROC22作为试验材料,探讨缓释复合肥不同施用次数与普通复合肥及不施肥之间对甘蔗生长、产量和蔗糖分的影响。试验结果表明:与对照相比,3个施肥处理增产幅度在82.9%~98.9%之间,差异均极显著;较普通复合肥,缓释复合肥一次性施用增产4.0%,差异不显著;分2次施用增产8.7%,差异极显著。缓释复合肥一次性施用有利于甘蔗增糖,分2次施用有利于甘蔗增产。

Different Applications of Slow-Release Compound Fertilizer to Cane Yield and Sucrose Content

Different applications of slow-release compound fertilizer were conducted under field cultivation conditions, taking ROC22 as test variety, to test their effect to the cane growing, cane yield and sucrose content. The results showed that, compared with the check treatment (no fertilizer), the 3 treatments with fertilizer could increase cane yield by 82.9%~98.9%, the differences were significant. Compared with ordinary compound fertilizer, an increase of 4.0% in cane yield was obtained from slow-release compound fertilizer applied all at once during planting, and the difference was not significant; but when it was applied twice during plant and top-dressing, an increase of 8.7% in cane yield would be obtained with greatly significant difference. It seemed that slow-release compound fertilizer was beneficial to the sucrose content when applied all at once and beneficial to cane yield when applied twice.