一、基本情况1.气候情况:陕西位于东径106度与110度,北纬31度45分与37度35分之间,分为关中、陕南、陕北三个棉区。关中属黄河区域棉区,地势平坦,棉田分布于海拔300—600米之间,北纬35度以南地区,无霜期220天左右。由于境内泾、洛、渭惠渠的影响,地势高低的不同,气候冷暖,雨水多寡亦有差异,因而又分别为 I. Basic Information 1. Climate Conditions: Shaanxi is located at 106 degrees and 110 degrees east of the east track and between 31 degrees and 45 degrees north latitude and 37 degrees and 35 minutes. It is divided into three cotton areas: Guanzhong, Southern Shaanxi and Northern Shaanxi. Guanzhong belongs to the Yellow River area cotton area, flat, cotton fields located at an elevation of 300-600 meters, latitude 35 degrees south of frost-free period of about 220 days. Due to the influence of Jing, Luo and Weihui ditches in the territory, the difference in topography, the warm and cold climate, and the amount of rainwater are also different, so they are respectively