The semi-arid area which grows the crops have the characteristics of uneven and little rainfall.
半干旱地区具有降水不匀和多变低水的特点。
Groundwater is the significant source of arid and semi-arid area, sometimes it's the single source of water.
地下水是干旱、半干旱地区用水的重要来源，有时甚至是唯一的水源。
Water saving effects on surge flow border irrigation were studied under well irrigation in semi-arid area of West Liaoning.
研究了辽西半干旱区井灌条件下褐土涌流畦灌的节水效果。
According to the natural conditions and the management situation of the flood land of the west semi-arid Area of Heilongjiang province.
从黑龙江省西部半干旱地区自然概况及河滩地经营现状出发。
Therefore, tree planting and grass growing in semi-arid area maybe reduce runoff, meanwhile, improve monthly runoff distribution in a year.
我们采取径流实验小区进行对比观测的方法，初步分析了裸地、林地和草地三种不同下垫面条件对径流量及年内分配的影响作用。
The vegetation features and biomass of sandy rangeland in semi-arid area of Yanchi County, Ningxia were studied by means of plot investigation methods since 1991.
采用样地调查法，对盐池县1991年以来不同时期的老封育区、新封育区和对照区进行半干旱沙地草场的植被特征及其生物量比较研究。
Cultivating experiment of Prunus armeniaca by using pocket-transplanting method is one of the investigation contents about new forestation techniques in semi-arid area.
植苗袋法栽植山杏试验，是半干旱地区造林新技术研究的主要内容。
Regional rainwater resources potential is crucial to rainwater utilization planning, water resources exploitation and ecological environment improvement in semi-arid area.
雨水资源化潜力是雨水利用规划的基础，也是半干旱地区水资源开发和生态建设的基础，研究其计算方法十分必要。
Propylaea japonica is one of important predatory natural enemies in arid and semi-arid area China, especially those preying on younger larvae and eggs of insect pest in orchards and cotton fields.
龟纹瓢虫propylaeajaponica是我国干旱、半干旱地区农林果蔬生产中重要的捕食性天敌之一，尤其在夏季高温、干旱的情况下，对果园、棉田的幼龄害虫和卵的捕食作用非常明显。
Some stress resistant physiological indexes of the leaves of three Ligustrum species were compared to provide theoretical basis for cultivation management in arid and semi-arid area in north China.
为给女贞、金叶女贞和金边女贞在北方干旱、半干旱地区的栽培与管理提供理论依据，对这三种女贞的部分抗性生理指标进行了比较试验。
It relies strongly on water especially in semi arid area.
尤其在半干旱地区，对水的依赖性更强。
Solid water affords a new approach to drought resistant planting in arid and semi arid area.
固体水为干旱、半干旱地区的抗旱造林提供了一种新的途径。
In the arid and semi arid area, the precipitation is little, soil moisture insufficient and low survival rate, low preserved rate and slow growing of trees.
干旱半干旱区降水少，土壤水分亏缺，林木成活率低、保存率低、生长缓慢。
The central south karst region of Shandong Province is one of the typical areas in the Northern China temperate semi arid karst area.
鲁中南岩溶区是中国北方半干旱温带岩溶区中具有代表性的地区之一。
Due to fewer rainfall, lean soil, serious soil and water loss and the long term negative effect of human activity, the ecological environment in hilly semi arid area is being degraded.
低山丘陵半干旱区气候干旱、土地贫瘠、水土流失严重，加上人类活动的长期负面影响，使得该地区生态环境不断恶化。
The western area of 1oss plateau of China, including the area of GansuProvince, Ninxia Hui Autonomous region and Haidon district of QinghaiProvince, lies in the arid and semi-arid climatic zone.
我国黄土高原西部地区，包括甘肃、宁夏和青海的海东地区，位于干旱和半干旱的气候类型地带。
Northeast semi-arid region is one of the main parts of the north dry farming area, most of which no irrigation water resources.
东北半干旱区是我国北方旱农地区的重要组成部分，多数地区没有灌溉水源。
Northeast semi-arid region is one of the main parts of the north dry farming area, most of which have no irrigation water resources.
东北半干旱区是我国北方旱农地区的重要组成部分，多数地区没有灌溉水源。
Northwest of China, whose area accounts for 38 percent of the total, is one of the typical arid and semi-arid zone in the world.
我国西北地区是世界上典型的干旱半干旱地区之一，占国土面积的38%。
The characteristics of alfalfa growth in the semi-arid sandy area for different buried depths of underground drip irrigation are studied.
研究了半干旱沙区不同滴灌带埋设深度下紫花苜蓿的生长特性。
The area of arid and semi-arid region of China accounts for 52.5 percent of the the whole area of territory, it is important bases of agriculture, forestry, animal husbandry of our country.
中国干旱半干旱地区面积约占国土总面积的52.5%，成为农业、林业、畜牧业的重要基地。
The area of Ningxia belongs to semi-arid-region extremely shortage of water resource, there is a lot of loophole in using management.
宁夏地区属于半干旱地区，水资源极为短缺，在运用管理上又存在很多的漏洞。
In the area of semi - arid desert, the precipitation almost seep completely.
半于旱地区的沙漠地带，大气降水基本全部入渗。
China's arid and semi-arid land area accounting for about 1/2, while, with the enhancement of Greenhouse effect, the of drought-resistant varieties breeding will be an important aspect in the future.
我国干旱和半干旱地区面积约占全国土地面积的1/2，同时，随着全球温室效应的增强，对抗旱品种的选育将是未来品种的选育的一个重要方面。
China's arid and semi-arid land area accounting for about 1/2, while, with the enhancement of Greenhouse effect, the of drought-resistant varieties breeding will be an important aspect in the future.
我国干旱和半干旱地区面积约占全国土地面积的1/2，同时，随着全球温室效应的增强，对抗旱品种的选育将是未来品种的选育的一个重要方面。
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