【摘要】 为了确定上海地区植保机械喷药的安全间隔距离,测定了4种常用植保机械在不同风速下有效喷射距离和雾滴最大漂移距离,并建立了有效喷射距离和雾滴最大漂移距离与风速的数学模型。结果表明,有效喷射距离与风速模型的R≥0.9723,SE≤0.76;雾滴最大漂移距离与风速模型的R≥0.9954,SE≤0.75。为了确保农田周围的水生动物不受农药危害,施药点的安全间隔距离为雾滴最大漂移距离+6 m。更多还原

【Abstract】 In order to clarify the safe distance from spray application by plant protection machinery in Shanghai area,the effective spraying ranges of four kinds of common sprayers and the maximum drift range of droplet were tested under various wind speeds,and mathematical models of the ranges and wind speeds were established by means of statistical analysis.The results showed that the correlation coefficients were 0.9723 or more for the models of the effective spraying ranges and wind speeds,and 0.9954 or more for the models of the maximum drift ranges and wind speeds,and the standard errors were respectively 0.76 or less and 0.75 or less for both kinds of the above models.In order to keep the aquatic animals near farmland from chemical injury,the safe distance from spraying location should be the maximum drift range of droplet plus 6 m.更多还原