【摘要】 针对沙漠高温、强光照以及养分贫瘠等特点,研制了复合植物营养元素抗旱保水剂。通过甘草栽培试验,选出与甘草根系具有良好的相容性,并具有较优性能的复合植物营养元素抗旱保水剂作为沙漠条件下种植甘草的最佳材料。试验结果表明,复合植物营养元素抗旱保水剂的制备,营养元素含量约1.0%时,其平衡吸纯水倍率可达450￣800g/g,平衡吸盐水倍率可达50￣70g/g,吸水后具有良好的凝胶强度,与沙混合可增强透气性。将其应用于模拟沙漠干旱条件下甘草的栽培,用量在1.0%￣1.5%之间时,既能保持外部环境干旱缺水条件下甘草根际水分含量,又能为甘草生长提供全面充足的养分。更多还原

【Abstract】 For the characteristics of the high temperature, strong light, and infertile soil in desert, we developed a compound super absorbent for plant. It was found that the compound super absorbent with 1.0% nutritional elements could swell 450~800g/g in water and 50~70g/g in salt-solution to its own weight, and with better gel strength. Through the cultivation of liquorice with different compound super absorbent under drought condition, it was shown that 1.0%~ 1.5% compounds super absorbent in sand could maintain the water condition around the roots and supply the nutrient to the liquorice.更多还原