摘要
本项研究采用正交试验,选用L_9(3~4)正交表拟定试验方案,对半干旱黄土丘陵沟壑区集流抗旱造林技术优化模式进行了研究,结果表明:影响造林质量的四个因素顺序是:造林树种(A)>栽植穴覆盖材料(D)>单株集流面积(B)>造林整地工程(C)。各因素中水平顺序如下:A因素中:刺槐>白榆>侧柏;D因素中:农膜>泡沫>作物秸秆;B因素中:2.5m^2>2.0m^2>1.5m^2;C因素中:反坡梯田>水平沟>鱼鳞坑。半干旱黄土丘陵沟壑区集流抗旱造林技术优化模式是:A_2D_2B_3C_1,即造林树种为刺槐,栽植穴覆盖材料为农膜,单株集流面积为2.5m^2,造林整地工程为反坡梯田。
The optimization pattern of afforestative techniques with collecting runoff to drought-resistance was present-ed by using L_9^(3^4) plan in the orthogonal experiments. It has shown that the order of four factors contributed to af-forestative quality is as follow:afforestative species (A)>cover material in the planted pits (D)>collection area ofrunoff for each tree(B)>land preparation for afforestation (C). Of all factors,the order of the same kind is asfollow: for A , Robinia pseudoacacia L. >Ulmus Pumila >Platycladus orientalis Franco ; for D,film>foam mateial>straw ; for B, 2.5m^2> 2.0m^2> 1. 5m^2; and for C, reverse slope terrace>level furrom>fish - scale pits. In semi -arid loess hilly areas, the optimization pattern of afforestative techniques with collecting runoff to drought-resis-tance is A_2D_2B_3C_I. Namely, afforestative species is Rohinia Pseudoacacia L; the cover material of planted pits isfilm; the collection area of runoff for each tree is 2.5m^2,and the land preparation pattern for afforestation is reverseslope terrace.
出处
《水土保持通报》
CSCD
北大核心
1993年第4期15-19,共5页
Bulletin of Soil and Water Conservation
关键词
集流
优化模式
干旱区
造林
collecting runoff
afforestative
techniques
orthogonal experiments
optimization pattern
