摘要
[目的]筛选盐碱棉田改良剂的最优组合。[方法]采用4因素3水平正交试验设计，研究复合肥、腐殖酸、磷石膏、牛粪4种土壤改良剂对盐碱地棉花株高、果枝台数、成铃数及产量的影响。[结果]磷石膏对棉花产量影响最大；最优组合为复合肥450 kg／hm2、腐殖酸600 kg／hm2、磷石膏22500 kg／hm2、牛粪7500 kg／hm2，该处理的棉花株高中等，果枝台数、成铃数均为最高水平，籽棉产量最高，达到3146．8 kg／hm2。[结论]为提高盐碱地棉花产量提供了技术支撑。
Abstract
Objective] The aim was to select the optimal combinatiion of saline-alkali cotton.[Method] Using the orthogonal experiment de-sign with four factors and three levels, effects of compound fertilizer, humic acid, phosphogypsum and cow dung on plant height, fruit-bearing branch number, number of bolls and yield of cotton were studied.[Result] The results showed that phosphogypsum was the most influential for cotton yield. The best ameliorant combinantion was compound fertilizer 450 kg/hm2 , humic acid 600 kg/hm2 , phosphogypsum 22 500 kg/hm2 , cow dung 7 500 kg/hm2 .Under this treatment, cotton plant height was medium level, fruit-bearing branch number and num-ber of bolls were the highest level, the seed cotton yield was 3 146.8 kg/hm2.[Conclusion] The study can provide technical support for im-proving cotton yield in saline-alkali land.
国家科技期刊平台
NSTL
维普
万方数据