半干旱的

Zinc deficiency occurs worldwide in soils and plants, particularly in calcareous soils of arid and semi-arid regions.

土壤和植物中的锌缺乏是一个全球性的问题，特别是在干旱半干旱地区的石灰性土壤上。

Soil CaCO3 eluviation and deposition process is the most important development and evolution process of soil, from parent material to mature soil in the Loess Plateau, arid and semiarid area.

土壤碳酸钙(CaCO_3)的淋溶淀积过程是黄土高原以及干旱和半干旱地区土壤形成发育的主要过程之一，也是地球化学过程的主要内容。

In view of the poor natural conditions and inefficient agriculture, solely increasing numerator is far from enough.

我省70%以上的人口都是农民，70%以上的农村又属于干旱半干旱山区，自然条件差，农业效益低，仅仅在"扩大分子"上做文章是远远不够的。

Because distribution of annual rainfall amount year by year,are cruelly nonuniform,soil water resources are basically important on the growth and development of plants.

土壤水是重要的生态水源和水文要素之一，黄土高原位于干旱半干旱地区，降水量的年际变化大和季节分配极不均匀，土壤水资源对植物生长发育的影响尤为重要。

Plastic film is a modernization planting technique in droughty and semiarid area, it is adapted to wheat, cootten, corn, peanut and so on. Plastic film can save water, protract crop's vegetal time, increase production.

地膜覆膜是在干旱、半干旱地区推广使用的一种现代化种植工艺，适用于小麦、棉花、玉米和花生等农作物，能够达到节水、延长作物的生长期、增产等目的。

Three seriousenvironment problems of the soil erosion, desertification and salinization in the aridand semiarid area not only endanger the throughput and the stability of the dry landfarming, but also jeopard the country ecosystem security.

干旱、半干旱地区的水土流失、土地沙漠化、土壤盐碱化三大环境问题，不仅直接危害北方旱地农业系统的生产能力和稳定性，而且危及到了国家生态安全建设。

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。

Soil microbiotic crusts are widespread in arid and semiarid regions, they are one of the major components of desert ecosystems, and their importance has been demonstrated by numerous researches.

：生物土壤结皮广泛分布在干旱半干旱地区与寒区荒漠，是荒漠生态系统的主要组成和景观特征之一，其重要性已被大量的研究报道所证实。

These bryophytes, in this sense, have to tolerate great heat and drought.

在干旱和半干旱地区，影响苔藓植物分布的环境因子包括降水、p H值、Ca CO3 含量、植被盖度、有机质含量以及土壤质地等，其中起重要作用的是降水。

This paper reviews the predictions and management implications of two current paradigms in the ecology and management of arid and semi-arid rangelands.

该文对当前干旱和半干旱地区的生态和管理的两个模式做了综述。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。