[1]王青宁,王晗生*,吴高潮,等.限量灌水造林中穴底层施保水剂的效应限量灌水造林中穴底层施保水剂的效应[J].西北林学院学报,2009,24(01):82-86.
　WANg Qingning.,WANG Hansheng,WU Gaochao,et al.Effects of WaterHolding Agent on Tree Planting under Limited Irrigation[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2009,24(01):82-86.
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第24卷
期数:
2009年01期
页码:
82-86
栏目:
出版日期:
2009-01-20

文章信息/Info

Title:
Effects of WaterHolding Agent on Tree Planting under Limited Irrigation
作者:
王青宁1; 2; 王晗生1; 3*; 吴高潮2; 衣学慧2; 鲁晓琳4
（1.西北农林科技大学，陕西 杨陵 712100； 2.杨凌职业技术学院，陕西 杨陵 712100；3.中国科学院、水利部 水土保持研究所，陕西 杨陵 712100；4.咸阳市秦都区林业站，陕西 咸阳 712000）
Author(s):
WANg Qingning1.2;  WANG Hansheng1;  3;  WU Gaochao2;  YI Xuehui2;  LU Xiaolin4
(1. Northwest A&F University, Yangling, Shaanxi 712100, China ; 2. Yangling Vocational College of Technology, Yangling, Shaanxi 712100, China; 3. Institute of Soil and Water Conservation , Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China; 4. Qindu District Forestry Station , Xianyang , Shaanxi 712000, China)
关键词:
保水剂; 造林; 灌水; 覆盖; 成活; 生长
Keywords:
waterholding agent;  forestation;  irrigation;  mulching;  survival;  growth
分类号:
S725.7
文献标志码:
A
摘要:
采用植树穴底层施保水剂的方法，通过测定幼苗的成活、生长、根系垂直分布深度、叶片水分以及土壤水分，对限量灌水造林进行了研究。结果表明使用保水剂条件下幼苗根深变浅，但由于土壤供水条件被改善，对幼苗生长并没有产生消极影响。使用保水剂使叶片含水量提高、幼苗生长量增大。使用保水剂以及地膜覆盖与保水剂结合应用对限量灌水均具有增进作用，其中结合应用的作用更大。保水剂作用的发挥与水分条件相关。使用保水剂使幼苗成活过程放缓，但通过增大灌水量，可使这种不利影响减小。在灌水量2.5 kg/株下，幼苗高生长量随保水剂用量的增加而增大。而在灌水量0.5、1.5 kg/株下，保水剂用量至24 g/株，保水剂不再有继续促进幼苗生长的作用。
Abstract:
The method of applying waterholding agent in the pits for planting trees was adopted to study the afforestation under limited irrigation by investigating the seedling survival, growth, root depth, leaf water and soil water contents. The results showed that the root depth with applying the waterholding agent became shallow, but that didn’t result in the negative effect on the seedling growth because of the improvement of soil water supplying. Leaf water content increased, and the growth seedlings was promoted. Applying the waterholding agent only and in association with the mulch of plastic film all produced the promotion to the limited irrigation, of which the association acted better. The effect of applying waterholding agent was related with water conditions. Applying the waterholding agent made the seedling survival slow down. However that unfavorable effect on the survival would be decreased through raising the irrigating amount. At 2.5 kg of irrigating water per seedling, the seedling grew increased with the increase of applying waterholding agent. At 0.5 kg or 1.5 kg of irrigating water per seedling, the waterholding agent didn’t promote seedling growth any longer as the using amount of the waterholding agent increased to 24 g per seedling.

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备注/Memo

备注/Memo:
收稿日期：20080327修回日期：20080613基金项目：国家林业局黄土高原林木培育实验室基金及西北农林科技大学科研专项（04ZM062）作者简介：王青宁，女，副教授，主要从事森林培育及数理统计研究与教学工作。*通讯作者：王晗生
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