保水剂对不同作物水分利用效率及产值的影响

为鉴别保水剂对不同作物水分利用效率及产值的影响,以便于保水剂的应用与推广,在干旱半干旱区选择了西瓜、马铃薯和玉米3种作物,在干旱区选择了春小麦、向日葵、玉米和番茄4种作物,以不同作物不施保水剂为对照,分析比较了不同作物施用保水剂的水分利用效率、水分产出率、产量和产值。结果表明干旱半干旱区西瓜的增产值最大,但马铃薯的增值率最高且节水效果最好。干旱区向日葵的增产值最大,但玉米的增值率略高于向日葵且有很好的节水效果。根据不同作物施用保水剂的水分利用效率和增产值情况,建议干旱半干旱区推广、应用保水剂应优先选择马铃薯、西瓜,干旱区应优先选择向日葵、玉米。

Effects of super absorbent polymer on water use efficiency and output value of different crops in different regions

In order to improve water use efficiency and crop output value,promote the popularization and application of super absorbent polymer.The objective of this study was conducted to study the influences of super absorbent polymer on water use efficiency and crops output value.The experiment was conducted with watermelon,potato and maize as test crops in arid and semi-arid regions.Meanwhile,spring wheat,maize,sunflower and tomato as test crops in arid region.Different crops no applied super absorbent polymer as control in different regions.The water use efficiency,water output efficiency,crop yields and crop output value of different crops had been monitored and had been analyzed in different regions.The results showed that watermelon had the highest output value;however,potato had highest value adding rate and highest water saving effects in arid and semi-arid region.Meanwhile,sunflower had the highest output value;but maize had highest value adding rate and highest water output efficiency in arid region.Potato and watermelon should be the preference crops for popularization and application super absorbent polymer in arid and semi-arid regions,and sunflower and maize should be the preference crops in arid regions.