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博乐市滴灌棉田“3414”中肥力试验结果表明,博乐市滴灌棉田最大施肥量为纯氮91.200 kg/hm2、五氧化二磷92.910 kg/hm2、氧化钾为112.425 kg/hm2,产量为4 291.11 kg/hm2;最佳施肥量为纯氮165.435 kg/hm2、五氧化二磷86.445 kg/hm2、氧化钾为89.310 kg/hm2,产量为4 297.02 kg/hm2。N3P2N2区产量最高,氮、磷、钾增产率最高,为6.6%～44.0%,N∶P∶K比例1.0∶0.3∶0.2,施肥量尿素(含N 46%)450 kg/hm2、过磷酸钙(含P2O5 46%)225.0 kg/hm2、腐殖酸钾肥(含K2O 33%)136.5 kg/hm2。过磷酸钙、腐殖酸钾和20%尿素作基肥施入,剩余80%尿素作滴肥,共滴肥4次,分别为苗期、初花期、现蕾期、结铃期。
The results of fertility test showed that the maximum fertilization amount of drip irrigation cotton field in Bole was 91.200 kg / hm2, 92.910 kg / hm2 of phosphorus pentoxide and 112.425 kg / hm2 of potash, 4 291.11 kg / hm2. The best fertilizer was 165.435 kg / hm2 of pure nitrogen, 86.445 kg / hm2 of phosphorus pentoxide, 89.310 kg / hm2 of potassium oxide and 4 297.02 kg / hm2 of potassium oxide. The yield of N3P2N2 was the highest, with the highest yield of nitrogen, phosphorus and potassium being 6.6% ~ 44.0%, the ratio of N: P: K being 1.0: 0.3: 0.2, the amount of urea being 450 kg / hm2 including N 46% (Containing 46% P2O5) 225.0 kg / hm2, potassium humate fertilizer (containing 33% K2O) 136.5 kg / hm2. Superacid, potassium humate and 20% urea as basal applied, the remaining 80% urea for drip, drip four times, respectively, at the seedling, early flowering, budding period, the end of the bell.