沤肥主要含量是三要素,还包括其他的微量元素,是一种复合性肥。施用沤肥后,细菌,霉菌,原生动物蚯蚓等有益的微生物和小动物繁殖快,以致能抑制有害作物的细菌和线虫。但是微生物大量繁殖的同时,也消耗土壤中的氧,释放出碳酸气体,因而在土壤通气性坏的情况下,一次沤肥施量过多,会造成土壤中的氧不 沤 fat main content is three elements, but also includes other trace elements, is a compound fertilizer. After application of fertilizers, beneficial microorganisms such as bacteria, molds, protozoa and earthworms reproduce fast and can inhibit bacteria and nematodes that are harmful to crops. However, microbial multiplication at the same time, but also the consumption of oxygen in the soil, the release of carbon dioxide gas, and thus in the case of poor soil aeration, fertilizers once excessive, will cause the soil oxygen