cotton time

In the cotton harvest time, sampling to analyze, according to the subtraction counts nitrogen fertilizer utilization is 48.58%~ 53.15% in the cotton with drip irrigation, utilization of phosphorus is 18.73%~ 24.84%.

收获期棉株取样化验分析，根据差减法求得滴灌棉花氮肥利用率为48.58%～53.15%，磷肥利用率为18.73%～24.84%。

Spatial Distribution of Beginning Date of 10 ℃ and Latest Frost and Their Impacts on the Cotton's Seeding Time in Xinjiang

新疆棉区10℃初日和终霜期的空间分布特征及其对棉花播种期的影响

As time moved on, Aphis Gossypii adult life and reproductive capacity were tapered, indicating that Aphis Gossypii life and reproductive capacity of adult were affected with cotton growth time by DPC treatments.

随着时间的增长，棉蚜成虫的寿命和生殖能力逐渐减少，说明缩节胺处理的棉叶对棉蚜的成虫的寿命和生殖能力影响与棉花生长时间有关。

Next, the flowering season and sees the cotton wool time cotton and kapok corolla level air temperature to be high, the flowering season the time interval planting density high processing temperature was also noon high, otherwise early, late.

其次，花期和吐絮期棉花冠层空气温度较高，花期中午时段种植密度高的处理温度也高，早、晚则反之。

The result was of great significance to get meteorological service indexes about cotton's seeding time and to improve the meteorological service of cotton.

本研究对棉花播种期气象服务指标的把握进而提高棉花气象服务水平具有重要意义。