| 保水剂在干热河谷造林中的应用研究 |
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| 引用本文： | 伍建榕,罗质斌,陈义群,林文杰.保水剂在干热河谷造林中的应用研究[J].西部林业科学,2005,34(2):6-11. |
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| 作者姓名： | 伍建榕 罗质斌 陈义群 林文杰 |
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| 作者单位： | 1. 南京林业大学,江苏,南京,210037;西南林学院,云南,昆明,650224
2. 西南林学院,云南,昆明,650224 |
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| 基金项目： | 昆明市科技局科技计划项目200201007。 |
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| 摘 要： | 为探索保水剂在干热河谷区造林中的使用效果,进行了施用不同种类、不同用量保水剂的川滇桤木、墨西哥柏的温室育苗缺水模拟实验和元谋、易门典型干热河谷区的台湾相思、印楝田间造林试验。温室实验表明,应用保水剂使苗木根际土壤的含水量高出对照9.1%~39.2%,使苗木生长天数延长0.2~108.8天,耐旱天数延长2.2~100.6天。田间造林试验表明,在干热河谷的造林中应用保水剂,使新植树苗根际土壤的含水量高出对照0.7%~15.4%,且根际土壤含水量随保水剂用量的增加而增加;使造林成活率和保存率提高1.1%~72.4%,苗木的成活率和保存率也随保水剂用量的增加而增加;并使苗木株高、地径、冠幅和叶片数的生长获得显著提高,其提高程度仍随保水剂用量的增加而增长。
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| 关 键 词： | 保水剂 干热河谷 造林 应用研究 |
| 文章编号： | 1672-8246(2005)02-0006-06 |
Research on Application of Hydrogel to afforestation in Dry hot Valley Area |
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| Wu Jian-Rong,LUO Zhi-bin,CHEN Yi-qun,LIN Wen-jie.Research on Application of Hydrogel to afforestation in Dry hot Valley Area[J].Journal of West China Forestry Science,2005,34(2):6-11. |
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| Authors: | Wu Jian-Rong LUO Zhi-bin CHEN Yi-qun LIN Wen-jie |
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| Institution: | WU Jian-rong~ |
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| Abstract: | In order to investigate the effect of application of hydrogel to afforestation in dry hot valley area, a drought simulation experiment for seedlings of Alnus ferdinandi coburgii and Cupressus lusitanica treated with different kinds of hydrogel as well as different application rate of hydrogel was conducted in a green house, and field afforestation experiments for Acacia confusa and Azadirachta indica were performed in the typical dry hot valley areas in Yuanmou and Yimen respectively. Result of the experiment conducted in greenhouse indicated that rhizosphere soil water content, the number of growth days and the number of drought tolerance days of the seedlings treated with hydrogel increased by 9.1%~39.2%, 0.2~108.8 and 2.2~100.6 respectively in comparison with those of CK. Result of field afforestation experiment indicated that the rhizosphere soil water content of the lately planted seedlings treated with hydrogel increased by 0.7%~15.4% in comparison with that of CK, and the rhizosphere soil water content increased with increasing application rate of hydrogel; the survival rate and preservation rate of the seedlings treated with hydrogel increased by 1.1%~72.4%, and the survival rate and preservation rate increased with increasing application rate of hydrogel; hydrogel significantly promoted the growth of tree height, basal diameter and crown diameter as well as significantly increased the number of leaves, and the increasing range of the four indexes all increased with increasing application rate of hydrogel. |
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| Keywords: | hydrogel hot-dry valley afforestation research on application |
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