水利部黄河水利委员会黄河水利科学研究院研制的PAMN保水剂是～种高科技产品，保水剂的使用可以保住土壤中大量水份，能最大限度的减少水分的蒸发和流失，改善土壤团粒结构，提高土壤的肥效。PAMN保水剂本身无污染无毒害，降解后可被分解成腐植质成分，以利植物作为养料吸收。P The Yellow River Water Conservancy Commission of the Yellow River Water Conservancy Commission developed by the Yellow River Institute of Water Conservancy is a kind of high-tech products, the use of water-retaining agent can keep a lot of water in the soil, can minimize the evaporation and loss of water to improve soil aggregate structure, Improve soil fertility. PAMN water-retaining agent itself pollution-free non-toxic, degradation can be decomposed into humic components, to facilitate the absorption of plants as nutrients. P