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随着科技的进步与发展,人们的生活水平日渐提高。人们已不满足于温饱问题的解决,而对生活的质量要求也越来越高。食品要求绿色、无公害。蔬菜等农产品用于直接消费或者是其他产品的基础原料,若要达到无公害化,给作物施肥是最初最关键的一个环节。然而,由于我国的特殊国情;人口
With the progress and development of science and technology, people’s living standards are gradually increasing. People are not satisfied with the solution to the problem of food and clothing, but also the quality of life is also getting higher and higher. Food requirements of green, pollution-free. Vegetables and other agricultural products for direct consumption or other products based on raw materials, to achieve pollution-free, to fertilize the crop is the first one of the most crucial aspects. However, due to the special national conditions of our country; population