If urea, ammonium sulfate, etc., are used for foliar spraying of vegetables, although the leaf color of vegetables can be green and color is good, the content of harmful salts in green leafy vegetables will increase significantly, and then affect the health of consumers. . In the greenhouse, the temperature is high and the humidity is high. High-concentration ammonium nitrogen fertilizers are easily decomposed under the suitable temperature and humidity conditions due to the action of soil enzymes, and finally converted into gaseous ammonia, which in turn can lead to ammonia poisoning in vegetables and affect the quality of vegetables. And production, so greenhouse vegetables avoid concentration higher ammonium nitrogen fertilizer.
Reusable Mask,3 Layers Cotton Mask,Reusable Cotton Mask For Kids,Cotton Mask With Pm 2.5 Filter
Puyang Degren Medical Equipment Co., Ltd. , https://www.degrenyuwei.com