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采用均匀设计,研究了氮磷钾肥与络氨铜配施对抗虫棉产量、纤维品质及主茎叶氮磷钾铜养分的影响。结果表明:氮磷钾肥是主要的影响因素;肥铜配施有利于皮棉产量、纤维整齐度及纤维伸长率的提高,并能提高主茎叶的磷素含量,磷氮比及磷素吸收量。采用频数分析法,模拟出本地上等肥力水平条件下,具有95 % 置信度每公顷产皮棉1 500 kg 以上的优化方案是:每公顷施N302 .20 ～358 .45 kg ,P2O5 120.88 ～143 .38 kg ,K2O302 .20 ～358 .45 kg,Cu 6 .88 ～12.74 kg。
The uniform design was used to study the effects of N, P, K and Cu on the yield, fiber quality and N, P, K and Cu nutrition of main stem leaves. The results showed that N, P, K fertilizers were the main influencing factors. Fertilizer combination promoted the increase of lint yield, fiber uniformity and fiber elongation, and increased the contents of phosphorus, phosphorus and nitrogen and phosphorus uptake the amount. Using frequency analysis method to simulate the top soil fertility level, the optimized scheme with 95% confidence level of more than 1 500 kg per hectare of lint is: N302.20 ~ 358.45 kg / ha and P2O5 120.88 ~ 143 per hectare. 38 kg, K2O302. 20-358 .45 kg, Cu 6 .88-12.74 kg.