新型保水剂对祁连山典型乔灌木造林影响探讨

Effects of New Water Retaining Agent on Afforestation of Typical Trees and Shrubs in Qilian Mountains

为了研究“耕农抗旱宝”对干旱区造林的影响,在祁连县卓尔山林场进行野外实验。以乔木(祁连圆柏Sabina przewalskii和青海云杉Picea crassifolia)、灌木(香茶藨Ribes odoratum和珍珠梅False spiraea)为实验树种,分别设置实验组和对照组,实验组:灌木8 g/株、乔木25 g/株“耕农抗旱宝”;对照组在自然条件下进行。对比研究“耕农抗旱宝”对香茶藨、珍珠梅、祁连圆柏、青海云杉的土壤含水率、生长情况、叶绿素、八大离子含量的影响。研究表明:①实验组土壤含水率高于对照组,其中珍珠梅、香茶藨、祁连圆柏、青海云杉的土壤含水率差分别为2.33%、3.62%、2.33%、2.94%。随着灌水后时间的延长,实验组的土壤含水率高于对照组。②实验组对乔木灌木的树高、胸径、冠幅、枝条、新发芽率、生长量等指标优于对照组;③实验组中植物叶绿素含量高于对照组,香茶藨、珍珠梅、祁连圆柏、青海云杉的极差为3.5、1.1、1.4、1.2。④“耕农抗旱宝”抑制了Cl^(-)、K^(+)+Na^(+)含量其对乔灌木的伤害,促进了乔灌木的生长。综上所述,“耕农抗旱宝”提高了植树造林的效果可以在林业中广泛推广,在植树造林中具有重要的意义。

In order to study the effect of“Geng Nong Anti drought treasure”on afforestation of trees and shrubs in arid area, a field experiment was carried out in Zhuoer Mountain of Qilian County. In this study, trees(Sabina Przewalskii and Picea Crassifolia), shrubs(Ribes odoratum and False spiraea) were selected as experimental species. Experimental group and control group were set respectively. Experimental group was shrub 8 grams per pit and tree 25 grams per pit“Geng Nong Anti drought treasure”. The control group was given natural conditions. The effects on soil water content, growth, chlorophyll and eight ions contents of native Ribes odoratum, False spiraea, Sabina przewalskii and Picea crassifolia were studied. The results showed that:(1)The soil moisture content of experimental group was higher than that of control group, and the difference of soil moisture content of False spiraea, Ribes odoratum, Sabina przewalskii and Picea crassifolia were 2.33%, 3.62%, 2.33% and 2.94%, respectively. With the extension of time after irrigation, soil moisture content in experimental group was higher than that in control group.(2)The indexes of tree height, DBH, crown width, branches, new germination rate and growth amount of trees and shrubs in experimental group were better than those in control group.(3) The chlorophyll content of the experimental group was higher than that of the control group, and the range difference of Ribes odoratum, False spiraea, Sabina przewalskii and Picea crassifolia were3.5, 1.1, 1.4 and 1.2.(4)“Geng Nong Anti drought treasure”damaged the damage of Cl^(-)and K^(+)+Na^(+)content to trees and shrubs, and promoted the growth of trees and shrubs. To sum up, "Geng Nong Anti drought treasure" improves the effect of afforestation and can be widely promoted in forestry, which is of great significance in afforestation.