液氨是高浓度的氮肥,由于它具有肥效好,成本低、便于机械化作业等优点,一些技术先进国家在农业生产上已逐步推广使用。最近几年,我国也在山东、浙江、新疆、北京郊区等地试用,並准备进一步推广。 氨是作物可以直接吸收的营养成分,又是毒性很大的杀菌剂,能否在一定条件下把氨的肥效与药效都充分利用起来,使施肥与防病相结合,这是本文所要讨论的中心问题。 Liquid ammonia is a high concentration of nitrogen fertilizer, because of its advantages of good fertilizer efficiency, low cost and easy mechanization. Some advanced countries have gradually promoted the use of agricultural products. In recent years, our country has also been piloted in Shandong, Zhejiang, Xinjiang and Beijing suburbs, and is ready for further promotion. Ammonia is a nutrient that can be directly absorbed by crops and is a very toxic bactericide. Under certain conditions, it is possible to make full use of the efficiency and efficacy of ammonia to combine fertilization with disease prevention. This is what we will discuss in this article The central issue.