论文部分内容阅读
棉花是关系国计民生的战略物资,是纺织工业的重要原料,是广大棉农增收致富的基本来源,在我省国民经济中占有重要地位。当前,土地资源约束使粮棉争地矛盾越来越突出,大力开发滨海盐碱旱地,向盐碱地要棉花,棉花为粮食、蔬菜让地,是我省种植业协调发展的必然选择。一、滨海盐碱旱地可开发利用面积广阔环渤海低平原土地面积广阔,是我国后备土地资源的重要地区,该区地下淡水资源短缺,春秋干旱,夏季雨丰,年降水400—500毫米,70-80%集中在7—8月份,无霜期210—220天,大于0℃的有效积温4100—4300℃,日光充足,
Cotton is a strategic material concerning the people’s livelihood and the people’s livelihood. It is an important raw material for the textile industry and a basic source for the majority of farmers to increase their incomes and become rich. It occupies an important position in the national economy of our province. At present, the contradiction between land and resources has made the conflict between grain and cotton more and more prominent. It is imperative to vigorously develop the coastal saline-alkali drylands, ask cotton for saline land, and make cotton for food and vegetables. This is the inevitable choice for the coordinated development of planting industry in our province. First, the coastal saline-alkali dry land can be developed and utilization of a vast area of ?? the vast plains of the Bohai Sea lowland is an important area of reserve land resources in this area underground fresh water shortage, drought in spring and summer rainfall, annual precipitation 400-500 mm, 70 -80% concentrated in July-August, frost-free period 210-220 days, greater than 0 ℃ effective temperature 4100-4300 ℃, adequate sunshine,