【作者】 刘甫清；

【导师】 陆国盈；

【作者基本信息】 广西大学 ， 作物栽培学与耕作学， 2006， 硕士

【摘要】 保水剂又称吸水剂、高吸水性树脂，是人工合成的一种具有超高强吸水、保水能力的高分子聚合物。为了研究本校研发的保水剂的保水抗旱作用，本试验在温室内采用桶栽及槽栽实验，分四个水平施用本校研发的保水剂，即0Kg／666.7m~2(A／CK)、5Kg／666.7m~2(B)、10Kg／666.7m~2(C)、15Kg／666.7m~2(D)，研究了其对土壤含水量，甘蔗农艺性状，生理生化，产量和品质的影响。试验结果如下： 1．施用保水剂，在干旱处理时，能较长时间地保持土壤含水量，增加叶片的水势，减缓叶绿素的降解，提高光合效率，提高甘蔗的幼苗素质，提高茎旬生长速率，且随着保水剂施用量的增多，其效果越明显。 2．施用保水剂能改善甘蔗的抗旱机能，在干旱胁迫环境下，施保水剂能减缓干旱对甘蔗的伤害，降低叶片的丙二醛含量，降低脯氨酸含量，降低POD、SOD的活性，促进可溶性糖的转运，减少可溶性糖的积累，降低质膜透性，减轻细胞膜的损伤。保水剂的施用量越多，其抗旱效果越好。 3．施用保水剂能降低干旱胁迫对甘蔗产量的影响，提高甘蔗的工艺品质。在伸长期停止供水40天的情况下，施用保水剂的处理比对照的产量要高，甘蔗的含糖量等工艺品质都比较好，随着保水剂施更多还原

【Abstract】 Water retention agent is a kind of man-made high-hygroscopicity resin, which has super absorbent and maintaining capacity of water. In order to study the effects of the water retention agent made in guangxi university on water content in soil, agronomic charactoristics, physiological index, yield as well as the quality of sugarcane, pot and sht experiments were carried out. In the experiments, 0 kg/666.7m~2(A/CK)、 5kg/666.7m~2(B)、 10kg/666.7m~2(C)、 15 kg/666.7m~2(D) of the water retention agent were applied to the sugarcane field respectively.The results were as follows:1. Compared to the control, under dry condition, each treatment could maintain water content in soil for a long time. They could increase water potential but postpone degradation of chlorophyll in leaves, enhance photosynthesis efficiency. So they could promot the seedlings quality, enhance the growth rate of stems per ten days. The effects became more obvious when the application concentration of the water retention agent increased.2、 Each treatments could improve sugarcane’s drought-resistance ability under drought stress, water retention agent could alleviate the hurts to sugarcane from drought. They could reduce Meanwhile the content of MDA, Proline in leaves. Besides, they could reduce the更多还原