水分不足和养分缺乏是制约广大干旱农业地区生产的两个关键因素。
Water shortage and lack of nutrients are two key factors which restrict production in the drought masses of farms.
水分不足和养分缺乏是制约广大旱农地区农业生产的两个关键因素。
Water and nutrient deficiencies are two key factors of limiting the development of dryland agriculture.
造成中低产土壤的主要因素是土壤养分缺乏，其次是部分土壤存在障碍因素。
All above are composed of lower to medium fertile soils and lacking of nutrients is of main reason of low yields.
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