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应用各种方法改善农业的微气象条件,是防御农业气象灾害的有效途径。我国劳动人民创造的风障技术,在防御风害、寒害方面效果显著。国外在这方面的研究也很多,世界气象组织技术报告第59号综合地评述了凤障和防风带,马歇尔(Marshall)综合有关文献,论述了防风措施对作物的影响,都得出这样的结论:风速的减弱定会减轻作物的自然灾害,还会改善土壤——植物——大气系统中水热平衡状况。博乌切特(Bou-ehet)等认为风障减小蒸散,将会促进生育、提高产量。如在法国罗纳河流域,用防风带防御密史脱拉风(地中海北岸的一种干
Applying various methods to improve the micro-meteorological conditions of agriculture is an effective way to prevent agricultural meteorological disasters. The wind barrier technology created by the working people in our country has notable effects in preventing wind damage and cold damage. There are many foreign studies in this field. WMO Technical Report No.59 comprehensively reviews the related reports of phoenix bark and windbreak, Marshall synthesis, and discusses the impact of windbreak on crops, and concludes that : The reduced wind speed will reduce the natural disasters of crops and will improve the water-heat balance in the soil-plant-atmosphere system. Bou-ehet et al. Believe that the reduction of wind-induced transients will promote fertility and increase yields. As in the Rhone Valley in France, with the wind defensive Mi Mi pull off the wind (a dry north shore of the Mediterranean