[1]韩仕峰,李玉山,杨新民,等.榆林地区土壤水分资源及其利用[J].水土保持研究,1988,(02):117-123.
Han Shifeng,Li Yushan.The Water Resources of Soil and Its Utilization in Yulin Region[J].Research of Soil and Water Conservation,1988,(02):117-123.
点击复制
Han Shifeng,Li Yushan.The Water Resources of Soil and Its Utilization in Yulin Region[J].Research of Soil and Water Conservation,1988,(02):117-123.
榆林地区土壤水分资源及其利用
《水土保持研究》[ISSN:1005-3409/CN:61-1272/P]
卷:
期数:
1988年02期
页码:
117-123
栏目:
出版日期:
1900-01-01
- Title:
- The Water Resources of Soil and Its Utilization in Yulin Region
- 摘要:
- 榆林地区土壤质地主要由均质紧沙土、沙壤土和轻壤土组成,其土壤持水能力为:2m土层最大储水量382.6-496mm,多数土壤有效水在300-330mm之间,占全区总面积4/5,土壤释放水分的速度,在0-1巴,高出其它土壤13-33%,1-15巴,低于其它土壤13-23%,属于储量低、保水差和中等有效水含量的土壤水分类型区;其土壤水分利用,林地和人工草地系"赤字"水分利用.使土壤向干燥化方向发展,形成生物利用干层,农田和自然草地为年周期性水分补偿类型(干旱年除外),有一定增产潜势;合理利用途径有4点:(1)建
- Abstract:
- The soil textures in Yulin region are mainly composed of well-distributed compact sand,sandy loam soil and light loam.The maintaining water capability of the soils is as fllows:the greatest water reserve of the soil layer in two metres varies from 382.6-496.0mm,the soile ffictive water mainly varies from 300-330mm,the area of the soils makes up four-fifths of the total area.The speed that the soils release water in 01 bar is 13-33% higher than others and in 1-15 bar is 13-23% higher.So the soils belong to the typical region of soil water with lower reserve,badly property holding water and the medium of effect water content.the water utilization of forest land and artifical grassland have a deficit that makes the soil become dry,so that the soil has formed the dry layer of living things utilization.The field and the native pasture are part of the water compensation type of annual periodicity(except the dry year) and possess the certain potentiality increasing production,there are four ways that put water to rational use:(1) building the disposition system of great agriculture and making good use of the deeper layer water.(2) cooradinating the measures of engineering and tillage and protecting precipitation.(3) properly arranging the measures of living things.(4) the deposited water which has come from the soil of the lined texture soil will be used to develop irrigation field or forest net.
参考文献/References:
[1] 李玉山等,黄土高原土壤水分性质及其分区,《中国科学院西北水土保持研究所集刊》第2集,1985,1-16页.
[2] 陕西师范大学地理系,《榆林地区地理志》,陕西人民出版社,1987,4,128-135页.
[3] 石玉洁等,燕发条件下导水率和扩散率的测定,《水利学报》,1984(2),33-38页.
[4] 阂瑾如等,北方旱区主要农作物水分供需状况分析,《干旱地区农业研究)).1987(1),30-42页.
更新日期/Last Update:
1900-01-01