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研究保水剂和不同氮肥配合施用下的节水保肥效果。盆栽条件下以玉米为供试作物,研究保水剂与这些氮肥配合施用的节水保肥效果。结果表明,保水剂在不同氮肥溶液中的吸水倍率随肥料浓度的增加而下降;不同氮肥对保水剂吸水倍率的影响按尿素、碳酸氢铵、硫酸铵、氯化铵的顺序递增;保水剂在大量吸水的同时,也对溶于水中的尿素分子或者NH4+有吸持作用,
To study the water-saving and fertilizer-saving effects of water-retaining agent and different nitrogen fertilizers. Under potted condition, corn was used as the test crop to study the water-saving and fertilizer-saving effect of water-retaining agent and these nitrogen fertilizers. The results showed that the water absorption capacity of water-retaining agent in different nitrogen fertilizers decreased with the increase of fertilizer concentration. The effects of different nitrogen fertilizers on the water absorption capacity of water-retaining agent increased in the order of urea, ammonium bicarbonate, ammonium sulfate and ammonium chloride. A large number of water absorption, but also soluble in water, urea molecules or NH4 + adsorption effect,