陡坡地果園覆蓋作物與敷蓋觀察
Other Title
Observation of Cover Crops and Mulching on Steep Slopeland Orchard
Journal
中華農學會報
Journal Issue
新91
Pages
69-76
Date Issued
1975-09
Author(s)
王孝才
張雙滿
程仲武
鄭慶生
H. T. WANG
S. M. CHANG
C. W. CHENG
C. S. CHENG
Abstract
本試驗之目的在探討覆蓋作物種植於25°陡坡地果園防止沖蝕之可能性，其結果顯示： 四種處理中以百喜草覆蓋效果最優，其土壤流失及逕流最低，柏氏小槐花與戀風草敷蓋次之，淨耕區最多，四年中總計流失土壤219 tons/ha。各處理之逕流與土壤流失間之相關關係顯著，但以百喜草覆蓋區之相關係數較小。兩種草種以百喜草初期覆蓋之速度較快，柏氏小槐花在第三年時亦高達96.13%，故陡坡地果園種植百喜草敷蓋可達成安定土壤之效果，並可供臺灣代替平台?段之新型坡面栽培果園的根據。
Considerable data concerning the soil and water conservation effect of cover crops and mulching on gentle slopeland orchard are available. Prior to this observation there was none of the same on steep slope. The slopelands being used as orchards in Taiwan are generally is steep. As Taiwan is located in the sub-tropical zone. It has heavy and intensive rainfall. It is the purpose of this observation on the possibility of erosion control of 25° steep slopeland orchard by cover cropping and mulching, This observation was carried out from 1970 to 1974 with two replications and four treatments namely; (A) Desmodium Buergeri used as cover crop, (B) Bshia grass used as cover crop, (C) Cleancultivation as check and, (D) Weeping love grass mowed for mulching. Four sets of water tank were constructed at the bottom of each plot for measuring the soil and water loss. The results are as follows: The best result from the four treatments is cover crop of Bahia grass beause the soil loss is minimum. Desmodium Buergeri and mulching with weeping love grass rank second. Check plot obtains the maximum soil loss of about 219 tons/ha. in four years. The correlation between runoff and soil loss has high significant level for each treatment but the mulching treatment with weeping love grass has smaller correlation coefficient than others. Regrading the cover condition of the ground surface, the growth of Bahia grass is faster than that of Desmodium Buergeri at the early stage. However, the latter also obtains a sufficient cover rate of 96.13% in the third year. In conclusion, the steep slopeland of 25° as well as gentle slopeland can be stabilized with cover crop of Bahia grass after the cover is established.
Subjects
陡坡地果園
敷蓋
覆蓋作物
觀察
Publisher
中華農學會
Type
journal article