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以3种保水剂及玉米为实验材料,采用室内测定不同保水剂的吸水特性及施入保水剂后温室盆栽玉米控水的方法,研究保水剂膨胀率、吸水特性及控水过程中保水剂对土壤水分、玉米苗期株高、基径等生长特征影响。结果表明,3种保水剂溶胀度可达147.0～296.3,吸水倍数可达57.70～290.9倍;吸水速率开始较快,45min后缓慢达到平衡;使用保水剂可增加盆栽玉米土壤含水量,抑制水分的蒸发。与对照相比,施用保水剂的玉米株高增加3.89%～22.10%,玉米基径增加50.00%～79.55%,根条数及根干重均好于对照。实验结果表明,3种保水剂的施用效果为沃特新型多功能保水剂最好,汉力淼保水剂、旱宝贝保水剂次之。保水剂能有效延长玉米植株死亡时间7d以上。
Three water-retaining agents and maize were used as experimental materials. The water-absorbing properties of different water-retaining agents and the water-control methods of potted corn in greenhouses after water-holding agent was applied were studied. The effects of water-holding agent on the swelling rate and water absorption of water- Soil moisture, maize plant height, base diameter and other growth characteristics. The results showed that the swelling degree of the three kinds of SAP can reach 147.0 ~ 296.3, the water absorption ratio can reach 57.70 ~ 290.9 times; the water absorption rate begins quickly and balance slowly after 45 minutes; using water retention agent can increase the soil moisture content of potted corn, evaporation. Compared with the control, the corn plants with high water-holding agent increased 3.89% -22.10%, the base diameter of maize increased by 50.00% -79.55%, the number of roots and the root dry weight were all better than the control. The experimental results show that the application effect of three kinds of water-retaining agent is the newest multifunctional water-retaining agent of Water, with Hanli Miao water retaining agent and dry baby water retaining agent second. SAP can effectively prolong the death time of maize plants more than 7d.