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两年试验表明,在石河子地区,棉花栽培措施对产量的作用顺序是:密度>播期>施尿素量>喷施矮壮素>施三料磷;在中等肥力条件下的最佳农艺组合方案是:4月16—22日播种,亩保苗1.1×10~4—1.2×10~4株,亩施尿素20—30kg,三料磷10—15kg,6月下旬(头水前)喷施矮壮素3.6—4.0g(有效成分50％),7月中旬(二水前)喷8—10g,生育期灌水3—4次,及时防治病虫害,亩产皮棉可达75—85kg。性状相关分析表明,皮棉产量除与铃数、铃重相关显著外,与株高、果枝数及6月中旬的叶面积系数相关也显著;纤维长度与密度呈负相关,与施尿素量呈正相关;马克隆值与播期呈负相关,与喷施矮壮素呈正相关;均匀度与施氮磷量均呈正相关;断裂比强度与密度呈正相关。
Two years of experiments showed that in Shihezi region, the order of the effect of cotton cultivation on yield was as follows: density> sowing date> amount of urea applied> spraying chlormequat> application of tri-phosphorous; optimal agronomic combination program under medium fertility conditions Is: April 16-22 sowing, mu seedlings 1.1 × 10 ~ 4-1.2 × 10 ~ 4 strains of urea 20-30kg, tri-phosphorus 10-15kg, in late June (before the head of water) spraying short Cortisone 3.6-4.0g (active ingredient 50%), mid-July (before the second water) spray 8-10g, 3-4 times during the growing season, timely pest control, lint per mu up to 75-85kg. Correlation analysis of traits showed that the lint yield was significantly correlated with plant height, fruit branch number and leaf area index in mid-June except for the significant correlation with boll number and boll weight. The fiber length was negatively correlated with the density and positively correlated with urea application ; Micronaire value was negatively correlated with sowing date and positively correlated with chlormequone spraying. The evenness was positively correlated with nitrogen and phosphorus content, and the fracture strength was positively correlated with density.