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蔬菜的生长发育离不开水、肥、气、热。作为密封环境的大棚蔬菜,气、热、肥的管理显得更为重要。 一、常见的气害与肥害 气害与肥害常互为因果。例如,氨气与亚硝酸气,常由于施入土壤中的氨态氮素化肥或硝酸氮肥施用过量或土壤干
The growth of vegetables can not be separated from water, fertilizer, gas and heat. As a greenhouse environment sealed vegetables, gas, heat, fertilizer management is even more important. First, the common gas and fertilizer Huiji and fat harm often cause and effect each other. For example, ammonia and nitrous acid gas, often due to ammonia nitrogen applied to the soil nitrogen fertilizer or nitrate nitrogen fertilizer overdose or soil dry