论文部分内容阅读
本文就硫素与棉花蕾铃脱落和产量的关系进行了研究。试验结果表明,在传统施肥量330kg N/hm2,60kg P/hm2情况下,棉花蕾铃脱落率达70.3%;在增加氮磷肥施用量并补施硫酸钾情况下,棉花蕾铃脱落率为68.5%,说明硫酸钾有效降低了棉花的蕾铃脱落率。在传统施肥量基础上施用硫磺30.0kg/hm2对棉花的蕾铃脱落没有影响,但是增加了棉花单株结铃数、提高了产量。与不施硫相比,施硫使棉花单株结铃数增加14.7%,产量增加了15.7%。上述结果说明,在新疆高产棉田中使用单质硫肥能够进一步增加棉花产量。
In this paper, the relationship between sulfur and cotton buds shedding and yield was studied. The results showed that under the condition of 330kg N / hm2 and 60kg P / hm2, the rate of cotton buds dropping off was 70.3%. Under the condition of increasing the amount of nitrogen and phosphorus fertilizers and supplementing potassium sulphate, the dropping rate of cotton buds was 68.5 %, Indicating that potassium sulfate effectively reduce the cotton budleaf shedding rate. The application of 30.0 kg / hm2 of sulfur on the basis of the traditional fertilization had no effect on the boll loss of cotton, but increased the number of bolls per plant and increased the yield. Compared with no sulfur application, sulfur application increased cotton boll number by 14.7% and yield increased by 15.7%. The above results show that the use of elemental sulfur fertilizer in high-yielding cotton fields in Xinjiang can further increase the cotton yield.