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来源：百度知道 编辑：UC知道 时间：2024/06/02 07:31:59
摘 要
本试验在滴灌施肥技术条件下对甘蔗进行室外袋栽，比较研究在此条件下不同氮肥的施用量对甘蔗产量和品质的影响，并与甘蔗常规管理作对比。本试验主要设置了四个氮钾肥施用量，分别为N1（10g尿素/袋；15g氯化钾/袋），N2（15g尿素／袋；15g氯化钾/袋），N3（20g尿素／袋；15g氯化钾/袋）和N4（30g尿素／袋；15g氯化钾/袋）。同时，还设置了一个常规土壤施肥作对比，其氮钾肥施用量为30g尿素／袋和30g氯化钾／袋。试验结果显示：在滴灌施肥条件下，施氮量不同对甘蔗产量有显著影响，滴灌施氮量为常规施氮量1/2的N2，其单茎重和蔗糖分分别为1.92kg和17.26％，而滴灌施氮量与常规施氮量相等的N4，其单茎重和蔗糖分分别下降了0.15kg和0.2％。试验结果表明：滴灌施肥显著促进了甘蔗的生长，比常规施肥甘蔗产量提高。在滴灌施肥条件下，施用1/2的常规施氮量所获得的甘蔗产量和品质最好，而增加氮肥施用量反而使甘蔗的产量降低，同时对甘蔗品质产生负面的影响。也就是说，过多施用氮肥不仅不能提高甘蔗产量，而且还会降低甘蔗的品质。
关键词：甘蔗 滴灌施肥 氮 产量 品质

This test fertilization technology in drip irrigation under the condition of sugarcane for outdoor Daizai, comparative study in this condition, the application of different nitrogen fertilizer on sugar cane yield and quality of, and sugar cane compared conventional management. This test set up four major potash fertilizer application rate of nitrogen, respectively, N1 (10g urea / bag; 15 g potassium chloride / bag), N2 (15g urea / bag; 15 g potassium chloride / bag), N3 (20g urea / bag ; 15g potassium chloride / bag) and N4 (30g urea / bag; 15 g potassium chloride / bag). At the same time, also set up a regular fertilizing the soil for comparison, the amount of nitrogen applied potash fertilizer urea 30 g / bag and potassium chloride 30 g / bag. The results showed that: drip irrigation, fertilization in the conditions, the volume of different nitrogen production of sugar cane a significant impact, drip nitrogen rate for conventional nitrogen rate 1 / 2 of the N2, and its single-stem