论文部分内容阅读
水是一切农作物生长发育必不可少的条件之一。就果树来看,其枝、叶和根部的含水量约占50％,果实含水量达80—90％。可见水对果树的生长发育更显得重要。近些年来,水资源紧缺已是世界性问题,仅从营口地区来看,1990年可利用水资源460亿立方米,距实际需要相差685亿立方米,到2000年可利用水资源527亿立方米,相差736亿立方米。因此,我们认为果树生产要向“节水型”、“旱作型”方向
Water is one of the essential conditions for the growth and development of all crops. Fruit tree point of view, its branches, leaves and roots of about 50% water content, fruit moisture content of 80-90%. Water can be seen on the growth and development of fruit trees even more important. In recent years, the shortage of water resources is a worldwide problem. From the perspective of Yingkou alone, the water resources available for use in 1990 amounted to 46 billion cubic meters, a difference of 68.5 billion cubic meters from the actual needs. By 2000, 52.7 billion cubic meters of water were available Meters, a difference of 73.6 billion cubic meters. Therefore, we think that the production of fruit trees should be toward “water-saving” and “dry-farming”