风沙流体对棉花幼苗破坏作用试验研究

The Experimental Study on the Damage to Cotton Seedlings by Windy and Dusty

以南疆阿拉尔垦区风沙流体特征参数为依据,利用自制试验装置,模拟自然条件下风沙流体对棉花幼苗的损害作用,建立棉花幼苗寿命与风沙流体特征参数的关系模型,以期对棉花幼苗抗风沙破坏的能力进行评价和预测。试验表明,作用于棉花幼苗的净风风速、风沙流体含沙量及其交互作用对幼苗寿命均有显著影响,棉花幼苗寿命与风速呈现指数函数关系(y=673.97 e^(-0.259x),含沙量为0 g/s),棉花幼苗寿命与风沙流体含沙量呈现幂函数关系(y=840.45 x^(-1.184),风速为13 m/s^15m/s)。研究结果为各种防护措施设计提供了一定依据。

Basing On the fluid characteristic parameters of the sandstorms occurred in Aral area in south Xinjiang China,using the self-made equipment,the damage process of cotton seedlings suffered by sandstorm was simulated,and the relationship models between the life of cotton seedling and characteristic parameters of the sandstorm was established.Through these mathematic models the ability of cotton seedling to resist sandstorm damage would be estimated and forecasted.It was shown that the pure wind speed and the sand concentration and its interaction would significant influence on life of cotton seedlings.The relationship between life of cotton seedling and wind speed was exponential function（y = 673.97 e^（-0.259x）,sand concentration is 0 g/s）.The relationship between life of cotton seedling and the sand concentration presents the power function（y = 840.45 x^（-1.184）,wind speed is 13 m/s ~ 15 m/s）.The research results provide a basis for the design of various protective measures and lodging resistance breeding.