摘要
通过对陕北丘陵沟壑区梯田土壤水分及作物产量监测结果的分析，认为田坎水分蒸发对田面土壤水分的减少作用，在距田坎１ｍ距离内是明显的，它使作物单株产量较坡地减少了１８．２％。理论计算表明：１ｍ高田坎水分损失１０．９％，２ｍ高田坎水分损失１１．２％。
In this paper,soil moisture loss from terrance bank and its effects on crop yield were studied,based on themeassurement of soil moisture and crop yield on hilly,and gully region of North Shaanxi. The results indicated thatevaporation from terrance bank obviously affected soil moisture of the terrance land in lm from the bank, and theyield of per stem of crop reduced 18.2%compared to the slope land. According to the calculation ,soil water of terrace landwith lm bank lost 10.9%and with 2m bank lost 11.2%compared to the slope land.
出处
《水土保持通报》
CSCD
北大核心
1994年第4期43-47,共5页
Bulletin of Soil and Water Conservation
关键词
梯田
田坎
土壤水分
作物
产量
hilly and gully region of North Shaanxi terrace land terrace bank evaporation by bank soil moisture dynamic state
