论文部分内容阅读
在大田条件下研究了播期、密度、追肥、化控和单株留果枝数五因素配合对麦后直播短季棉皮棉产量和霜前花率的影响。结果表明,供试五因素及其配合对产量和霜前花率有明显的效应。获得亩产皮棉80kg左右的最优组合是6月2~6日播种,密度8000~9000株亩,亩追尿素20~25kg,单株留果枝6~7个,亩施缩节胺35~4g。
The effects of sowing date, planting density, top dressing, chemical control and the number of fruit branches per plant on the yield and frostbite percentage of cotton lint in direct seeding short season were studied under field conditions. The results showed that the five elements of the test and its cooperation have a significant effect on the yield and frost before flowering rate. The optimal combination for obtaining about 80kg of lint per mu is sowing on June 2 ~ 6 with a density of 8000-9000 mu, recovering 20 ~ 25kg / mu of urea and 6-7 per fruiting branches, 3 ~ 5 ~ 4g.