论文部分内容阅读
一、营养液栽培的普及状况1. 设置面积 营养液栽培是扩大经营规模和提高生产率不可缺少的技术，最近10年，以番茄和蔷薇的石棉栽培为主，设施面积正急速地增加。日本在1997年的调查中，蔬菜和花的营养液栽培面积共达916hm2，尤为花的增加特别显著。但是由于使用终结的石棉和废
First, the popularity of nutrition liquid cultivation 1. Nutrient liquid cultivation is to expand the scale of operation and increase productivity indispensable technology, the last 10 years to tomato and rose asbestos-based cultivation, facility area is rapidly increasing. In 1997, Japan surveyed a total of 916 hm2 of nutrient-liquid cultivated vegetables and flowers, especially the increase of flowers. But due to the use of terminal asbestos and waste