为了给黑液实现资源化利用提供依据，在新疆进行了黑液腐植酸产品的田间试验，设计了3个处理，采用棉花定点定株方法调查其生理指标，并测定其生化指标，研究了它们对棉花的生长、产量和抗旱能力的影响。结果表明，在滴灌中应用腐植酸液肥，与常规固体肥料相比可明显促进棉花在各生育期的生长，能增加蕾、花和铃的数量，并且延长成熟时间，作物不易早衰。同时液肥还可提高棉花的经济性状，能够显著增加籽棉的产量，增产率可达12.3%。在棉花上使用该腐植酸产品后可降低叶片的蒸腾速率，提高叶片的保水能力和CAT活力，从而明显增强棉株的抗旱能力。黑液腐植酸产品对棉花具有良好的促长、增产和抗旱效果。

In order to provide the evidence for resource utilization of black liquor, the field experiments of humic acid product from black liquor were carried out in Xinjiang Province. With designing three treatments and fixed-point & fixed-plant method, physiological indexes of cotton were investigated and biochemical indexes were determined to study the effect of humic acid product on the cotton growth, production and drought resistance. The experiments showed that, compared with the conventional solid fertilizer, liquid fertilizer could remarkably promote the growth of cotton and increase the number of bud, flower and boll in the growing period in drip irrigation. The crop was not easy to decline and mature time was prolonged with the treatment of liquid fertilizer. The liquid fertilizer also can enhance the economic characteristics of cotton, and the crop’s yield treated with liquid fertilizer was increased by 12.3% than that of solid fertilizer. Moreover, the cotton experiment results supported that humic acid product from black liquor could evidently reduce transpiration rate of cotton leaf, and increase water-retention capacity and CAT activity. Therefore drought resistance of cotton was elevated. The study concluded that humic acid product from black liquor had positive effect on cotton growth, yield and drought resistance.