学术
退耕还林区抗逆袋栽植的抗旱与驱鼠（兔）作用
王明春[1] 李琪[2] 宗德禄[3] 张宏利[1] 杨清娥[1] 韩崇选[1]
[1]西北农林科技大学林学院,陕西杨凌712100 [2]渭南市临渭区林业工作站,陕西渭南713000 [3]吴旗县林业工作站,陕西吴旗717600
摘 要:
在小型啮齿动物危害严重的半干旱黄土高原退耕还林区，通过田闻试验与调查分析，对一种新型的抗逆袋栽植技术进行了研究。结果表明，采用抗逆袋栽植可提高侧柏造林成活率16．82％～20．74％，提高侧柏幼林保存率34．97％～81．89％，而且这种作用与坡位有关。成活率增幅坡上部略大干坡中部，而保存率增幅坡中部明显大干坡上部。抗逆袋栽植也可显著提高侧柏的树高、地径生长量，且不同规格抗逆袋的影响有显著差异，大袋对苗高生长量和地径生长量的影响远大于小袋的影响。与对照相比，大袋可提高侧柏幼树的树高生长量32．73％，提高侧柏幼树地径生长量4．14倍。不同坡位抗逆袋栽植的幼树高生长差异不明显，而地径生长量坡中部明显大于坡上部。抗逆袋栽植提高造林成活率、促进幼树生长的效果，与其内涂层在改善根区土壤水分状况中的作用密切相关。采用抗逆袋栽植可显著预防鼢鼠、达乌尔鼠兔和草兔对新植幼树的危害。与对照相比，抗逆袋栽植的苗木危害指数降低34．48％～37．93％。不同坡位抗逆袋栽植的驱鼠（兔）效果亦有较大差异，坡中部效果好于坡上部。但不同规格抗逆袋处理，苗木危害指数并无显著差异。[著者文摘]
文章出处:
《干旱地区农业研究》-2007年25卷5期 -40-45页
栏目信息:
文献标识码:
A
文章编号:
1000-7601（2007）05-0040-06
Effect of drought resistance and rodent repellant on using the stress resistance bag in planting at the area of removal lands from cultivation for afforestation
WANG Ming-chun, LI Qi, ZONG De-lu, ZHANG Hong-li, YANG Qing-e, HAN Chong-xuan （1. College of Forestry, Northwest A ＆ F University, Yangling , Shaanxi 712100, China ; 2. Forestry Station of Linwei District, Weinan , Shaanxi 713000, China ; 3. Forestry Station of Wuqi County, Wuqi , Shaanxi 717600, China ）
Abstract:
Based on the field experiment and investigation, a new planting method called Stress Resistance Bag Technique （SRBT） was studied at the area of removal lands from cultivation for afforestation in the Loess Plateau where drought and rodent damage are the two key harmful factors in forestation. The results showed that SRBT can increase the survival rate of forestation by 16.82 % --20.74 %, the reserve rate of forestation by 34.97 %- 81.89 % for Platycladus orientalis compared with normal planting（CK）. And the effect was influenced by the position on slope. Upper slope was higher at the survival rate of forestation, but middle slope was higher at the reserve rate of forestation while using SRBT. The increment in youngling height and basal diameter were also impacted by SRBT and the bag size. The effect was better for big bag, 35 cm in length and 28 cm in width than for small bag, 35 cm in length and 22 cm in width. The increment was increased by 32.73 % in height, 4.14 times in basal diameter compared with CK. There was not significant difference in height increment but there was in basal diameter increment between upper slope and middle slope. The basal diameter increment was bigger at middle slope than that at upper slope. The effect of SRBT on improving the survival rate of forestation, the increment of youngling height and basal diameter were directly connected with the soil moisture in the root zone, which has been improved by the inner coating on the bags. The SRBT can alleviate the damage of rodent such as Myospalax cansus, Ochotona daurica, and Lepus capensis to young trees. Compared with CK, the rodent damage index were decreased by 34.48 % - 37.93 %. There was not significant difference in bag size but there was some in different position of slope. The rodent damage index was lower at middle slope than that at upper slope.[著者文摘]
Key words:
Platycladus orientalis; stress resistance bag; drought resistance; rodent repellant; Loess Plateau; ecologically vulnerable region
基金资助:
国家”十五”科技攻关项目（2001BA509807-2-02）;国家林业局天然林保护工程重点科技推广项目（2000-11）;国家林业局重点项目（2002-20）
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