The loess plateau of china located at a transitional area where the semi - humid climate is changing into the semi - arid and arid climate 黄土高原地处半干旱半湿润向干旱荒漠的过度地带。
The develop of the ditcher has become a new approach to solve agricultural drought in northwest area 该机具的开发研制将成为干旱半干旱地区特别是我国西北地区解决农业干旱问题的新途径。
Research on construction of optimized agro - grassland ecological system of farming - pastoral transitional area in arid and semiarid region 干旱半干旱农牧交错区优化草地生态农业体系建设研究
Features of ecological environment of semi - arid area of the west in jilin province and water resource rational - exploitation utilization 吉林省西部半干旱地区生态环境特征及其水资源合理开发利用
Feasibility and prospect for developing alfafa industrialization in farming - livestock integrated region of northwestern arid and semiarid area 西北干旱半干旱地区农牧交错带发展苜蓿草业的可行性及前景分析
Experimental study on rainfall harvesting and microcatchment model for ecosystem rehabilitation in the transitional zone between arid and semiarid regions 干旱半干旱过渡带雨水集流试验与微型生态集雨模式
Ecological benefits of artificial seabuckthorn stands in semi - arid hilly region of loess plateauion soil - and water conservation and soil moisture 黄土丘陵半干旱区人工沙棘林水土保持和土壤水分生态效益分析
Cold regions cover the areas with the average temperature of the coldest month below 0 ’ c . arid regions cober arid and semiarid areas 寒区是指冬季最冷月平均温度为零度以下地区；旱区包括干旱区和半干旱区。
Study on the influence of soybeans ' output and benefit by different matching of nitrogen phosphorus and potassium in west semiarid of heilongjiang 氮磷钾配施对黑龙江西部半干旱地区大豆产量及效益的影响研究
The loess plateau of china is located at a transitional area where the semi - humid climate is changing into the semi - arid and arid climate 黄土高原地处半干旱半湿润向干旱荒漠的过渡地带，生态环境十分脆弱。
