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酸雨对农业环境的影响,迄今研究者各释不一,其中一重要原因就是试验方法不同。本文就研究酸雨对土壤肥力影响的一些基本试验方法设计进行了讨论。酸雨对土壤肥力影响研究的一个基本方法就是模拟试验。试验中,供试土壤应根据它在研究区中的贡献指数和影响程度来选择;酸雨成分模拟应以对研究区长期监测结果的酸雨成分均值为根据;酸雨致酸土壤进程模拟试验中,应注意土柱制备条件的一致性,诸如柱径大小,土壤细度,装柱紧实度及淋洗等条件的掌握;生物模拟试验中,应以作物对酸雨的敏感性和灵敏临界期,按研究区的作物群结构选择供试作物,确定试验方式和时期,一般以作物幼苗试验能获得良好的结果。
The impact of acid rain on the agricultural environment, so far different researchers, one of the important reasons is that different test methods. This article discusses the design of some basic test methods to study the influence of acid rain on soil fertility. Acid rain on the soil fertility impact of a basic method is to simulate the experiment. In the experiment, the test soil should be selected according to its contribution index and degree of influence in the study area. The simulation of acid rain component should be based on the mean value of the acid rain component of the long-term monitoring result in the study area. Pay attention to the consistency of preparation conditions of soil column, such as the size of the column, the fineness of the soil, the tightness of the packed column and the conditions of the elution. In the biological simulation test, the sensitivity of the crop to acid rain and the sensitive critical period The structure of crops in the study area is selected for the test crop, and the test method and period are determined. Generally, crop seedling experiment can obtain good results.