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豆角是一种对水敏感作物,覆膜豆角作为抢季节蔬菜,对水更敏感,既需要水来增快成长提早上市,又惧怕因浇水而降低地温,延迟豆角采摘时间,而影响经济效益,虽高产但不能高效。保水剂是一种高分子树脂,能吸附自身体积200～1000倍的水量。在水充足时充分吸水,作物需水时释放出来,供作物生长发育[1]。而水对地温具有调节作用,因此在覆膜豆角上施用保水剂,不但保墒而且保持地温。从而使覆膜豆角生产实现省水高产高效的目的[2]。在实际生产中总结出保水剂在覆膜豆角上的3大优势:保墒、提温和省水增效。
Bean is a sensitive crop of water, covered beans as a grab season vegetables, more sensitive to water, both need to speed up the growth of water market early, but also afraid of watering to reduce the temperature, delay bean picking time, and affect economic efficiency Although high yield, it can not be efficient. Super absorbent polymer is a polymer resin that can adsorb 200-1000 times its own volume of water. Sufficient water when the water is sufficient, when the crop is released from water for crop growth and development [1]. The water has a regulating role on the ground temperature, so the application of water-retaining agent on the coated beans, not only soil moisture and maintain the ground temperature. So that the production of coated beans to achieve high-efficiency water-saving purposes [2]. Summed up in the actual production of the three major advantages of water-retaining agent in the covered beans: moisture, temperature and water efficiency.