| 1. | Design and construction of surface drainage systems on agricultural lands in humid areas 潮湿区域农田表面排水系统的设计和建造 |
| 2. | Cultivation techniques of film - mulching stock beet in high altitude and humid areas in tianzhu county 天祝高寒阴湿区饲用甜菜覆膜栽培技术 |
| 3. | Variety trial result for cucumber grown in solar greenhouse during winter and early spring in high altitude and humid area of gansu 高寒阴湿区日光温室冬春茬栽培黄瓜品比试验初报 |
| 4. | The desertification land in china is mainly distributed in the arid , semi - arid and some of the semi - humid areas in the north . the area of desertification land is very large and it is widely distributed 我国沙化土地主要分布在北方广大干旱和半干旱,以及部分半湿润地带,沙漠化土地面积大、分布广,危害非常严重。 |
| 5. | Desertization , land degradation in arid , semi - arid and dry sub - humid area , is one of the environmental problems concerned by human society . it has a direct relationship with the existence and development of mankind 沙漠化即发生在干旱、半干旱及半湿润干旱地区的土地退化,是人类社会普遍关注的环境问题之一,与人类自身的生存和发展有着直接的关系。 |
| 6. | The results show that : ( 1 ) soil moisture follows a - distribution over the discussed zone of the humid area in summer , but do distribution at the researched zone vicinity of oasis desert area in winter 结果表明: ( 1 )在研究区域不同类型的下垫面条件下,夏季土壤水分在湿润研究区呈明显的单峰偏态分布,且以分布拟合效果为最好;而在临近绿洲的沙漠研究区则呈多峰分布,冬季呈分布。 |