复合保水剂保水性能及其与对玉米生长的影响

Water Retention Performance of Composite Water Retaining Agent and Its Effect on Corn Growth

摘要: 针对保水剂在砒砂岩与沙复配土上的应用效果问题，以自制的聚丙烯酸/2-丙烯酰胺基-2-甲基丙磺酸/腐植酸/膨润土复合保水剂、聚丙烯酸/2-丙烯酰胺基-2-甲基丙磺酸/膨润土复合保水剂以及市售沃特保水剂为例，采用室内测定和盆栽试验相结合的方法，分别对保水剂应用性能及其对玉米生长的影响试验。结果表明：三种保水剂吸水倍率及保水能力的顺序为PAAHM1 > PAAM > 沃特，抑制土壤水分蒸发能力为PAAM > 沃特 > PAAHM1。添加保水剂对玉米株高长势作用具有较好的促进作用，不同种类添加剂、不同量的添加剂以及施用部位之间存在一定差异。在保水剂用量较小以及干旱胁迫下，PAAHM1、PAAM具有比沃特保水剂更为优异的生长促进作用。

Abstract: Aiming at the application effect of water retaining agent on arsenic sandstone and sand compound soil, self-made polyacrylic acid/2-acrylamido-2-methylpropanesulfonic acid/humic acid/bentonite composite water retaining agent, polyacrylic acid/2-Acrylamido-2-methylpropanesulfonic acid/ bentonite composite water-retaining agent and commercially available water-retaining agent are taken as examples, using a combination of indoor measurement and pot experiment, respectively, on the application performance of the water-retaining agent and its effect on corn growth test. The results show that the order of water absorption rate and water retention capacity of the three water-retaining agents is PAAHM1 > PAAM > Water, and the ability to inhibit soil water evaporation is PAAM > Water > PAAHM1. The addition of water-retaining agent has a good promoting effect on the growth of maize plant height. Different kinds of additives, different amounts of additives, and certain differences between the application sites have some differences. When the amount of water-retaining agent is small and under drought stress, PAAHM1 and PAAM have more excellent growth promotion effects than water-retaining agent.