Abstract:

To evaluate the effects of organic-inorganic compound liquid fertilizer on cotton yield and quality, we studied the effects of organic-inorganic compound liquid fertilizer and chemical fertilizer on cotton yield and some fiber quality. We compared the cotton yield in the test plot (application of organic-inorganic compound liquid fertilizer) and the control plot (application of chemical fertilizer) and tested cotton quality. The results showed that: the lint yield of the test plot was lower than that of the control plot with no significant difference (P>0.05). In terms of quality, the cotton fiber length and lint in the test plot were higher than those of the control plot, and increased by 5.03% and 1.19%, respectively. The micronaire value of cotton in the test plot and the control plot had no statistical difference (P>0.05). The micronaire value and metric count of cotton were different under the application of the two fertilizers in different demonstration areas. In Xinhu County and Regiment 106, the micronaire value of cotton fiber under the application of compound fertilizer was lower than that under conventional fertilization, but it was the opposite in Wusu County. The micronaire value had a negative correlation with the metric count, and the effect of fertilizer on metric count was opposite to that on micronaire value. Compared with conventional fertilization, the organic-inorganic compound liquid fertilizer application had a slightly lower seed cotton yield, but it increased the lint content and had little impact on the lint yield. In addition, the organic-inorganic compound liquid fertilizer could appropriately increase the length of cotton fibers, improve the quality of cotton fibers, and meet the needs of cotton production.

Key words: cotton, cotton quality, yield, organic bacterial fertilizer