俄罗斯莫斯科大学化学系最近研制成功一种能够战胜干旱的土壤改良剂——水凝胶。它不易挥发,无毒,不溶于水,但具有较高的吸水性能。在土壤中,水凝胶可增加化学和生物化学过程的速度,使有机残留物变为腐殖质成分,并增强植物的生理活性。玉米和高梁中叶绿素的含量可增加60%～100%,豆类作物中固氮根瘤菌增加;玉米和大豆需水量减少一半以上。此 The Department of Chemistry, Moscow State University, Russia recently developed a soil conditioner that can overcome drought-hydrogels. It is not volatile, non-toxic, insoluble in water, but with high water absorption. In soil, hydrogels increase the rate of chemical and biochemical processes, turn organic residues into humic components, and enhance the physiological activity of the plant. The content of chlorophyll in maize and sorghum can be increased by 60% -100%, and nitrogenous rhizobia in legumes increase; the water requirement of corn and soybean can be reduced by more than half. this