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根据1967-1977年许多研究者对皮棉质量与施用肥料关系的研究结果证明:①氮肥用量在100-150公斤/公顷,对皮棉质量能显著改善,但氮肥用量150-250公斤/公顷与用量100-150公斤/公顷相比,不影响皮棉质量,氮肥用量高于250公斤/公顷皮棉质量有变坏趋势。②只有在土壤里活性磷含量低的时候,磷肥才能显著改善皮棉质量。非常缺磷的生荒地土壤,磷肥能显著改善皮棉的质量。如植物对磷的生物学需要满足以后,继续提高
According to the results of many researchers’ studies on the relationship between lint quality and the application of fertilizers from 1967 to 1977, it is proved that: (1) The amount of nitrogen fertilizer applied is 100-150 kg / ha, the lint quality can be significantly improved, but the nitrogenous fertilizer dosage is 150-250 kg / ha and the dosage 100 -150 kg / ha compared to the quality of lint does not affect the amount of nitrogen fertilizer more than 250 kg / hectare lint quality deterioration. ② Only when the active phosphorus content is low in the soil can the phosphate fertilizer significantly improve lint quality. Very poor phosphorus wasteland soil, phosphate fertilizer can significantly improve the lint quality. If the plant needs to meet the biological needs of phosphorus, continue to improve