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- The relationship of competitive ability and productive performance between land race Monkhead and modern variety 8275 of spring wheat in semi arid area of Loess Plateau was invested using de Wit replacement series. 采用deWit替代系列法研究了黄土高原半干旱雨养农业区传统地方品种(和尚头)与现代品种(陇春8275)之间在混播条件下的竞争结局。
- How can people make a living in this arid area? 这片不毛之地上的人们怎么谋生呢?
- Eke a bare existence from farming in an arid area. 在贫瘠的地区耕作以勉强度日
- Semi arid areas 半干旱地区
- Aeolian sand, distributed extensively around China?s arid and semi arid zones, is the main bearing body of wind erosion in China. 风成沙广泛分布于我国干旱与半干旱地区,是我国风蚀与风沙活动的主要载体。
- Water application furrow seeder for arid and semi arid region can carry on the watering operation as sowing and fertilizing with the objective of seedling prevention. 施水沟播机可在起垄施肥播种的同时进行施水作业,从而解决了干旱和半干旱地区的播种保苗问题。
- The situation of water resources deficiency is very scrious in the large areas o f the arid, semi arid even semihumid of Huabel Plain, endangering the agricultur al sustainable development. 华北平原广大的干旱、半干旱甚至半湿润区,水资源形势严峻,威胁农业持续发展。
- Semi arid climate, poor vegetation cover and highly erodible loess can be regarded as the main natural factors responsible for the formation of hyperconcentrated flows in the Loess Plateau, China. 黄土高原半干旱的气候条件、稀疏的植被和疏松易蚀的黄土物质,是该地区高含沙水流形成的自然地理因素。
- Soil salinization damaged ecosystem seriously,so it is necessary to study the arid area salinization. 准确提取盐渍化信息对土壤盐渍化监测和研究盐渍化动态变化具有重要意义。
- Key words: ecological circle; arid area; lake; hydrochemical property; wind-eroded lake. 作者简介:胡汝骥(1935-),男,陕西韩城市人,研究员,主要从事干旱区资源与环境研究
- The next battle will be rehabilitating more arid areas of China. 下一场战役是恢复中国更干旱的地区。
- In more arid area, man probably watched wild horses, wolves, and other animals dig for water and followed their example. 在较干旱地区,人类大概是看到野马、狼和其它动物发掘地下水,从而受到启发而学习它们的作法。
- The typical arid area in Northwest China covers about 25% of the whol e territory, mostly desert and gravel plain known as Gobi. 我国西北干旱区土地总面积约占国土总面积的25%25,大部分被戈壁,沙漠所覆盖;近几十年来沙漠化扩大的速度愈来愈快,形势严峻。
- Semi arid region of Chinese Loess Plateau 黄土高原半干旱地区
- In extensive arid area, grassplot also has the advantages such as easy to cultivate, easy to survive, low cost, short cycle and quick act. 在广大干旱地区,还具有易种植、易成活、成本低、周期短、见效快的优势。
- Its flocculus opposite, plunge into below main root to 20 meters deep, can be in year of rainfall arid area grows under 300 millimeter. 其小叶对生, 主根下扎至20米深, 可在年降雨量300毫 米以下干旱地区生 长。
- There is a large hilly area in the northwest. 西北部有一大片丘陵地带。
- Situating in the arid area with fragile eco-environment, Yutian Oasis is the poverty region emphasizing irrigated farming. 摘要新疆于田绿洲地处干旱内陆区,生态环境脆弱,是一个以灌溉农业生产为主的经济落后地区。
- This paper puts forward an optimal design method for designing standards of irrigation pivot engineering in the inland arid area on theb asis of the system analysis theory. 本文根据系统分析的理论,提出一种内陆干旱区灌溉枢纽工程设计标准优化设计方法。
- Sorghum, cultivated in the arid area along the west coastal line of Taiwan, Chinmen and Lienchiang counties, is used to prevent from land erosion due to strong wind. 中文摘要高梁生长在台湾西部靠海的平原,以及金门与连江县地区等含盐强风的地方,种植高梁能避免土壤被海风侵蚀,不会与其它的粮食作物争地。