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内蒙古洽维农业研究所水稻专家张然介绍,无土育苗是用石头粉作为基质育苗的一种方法,是利用内蒙古当地特有的红色矿砂,在1400℃以上的高温下,将矿砂膨化到7倍以上,形成玻化微珠无菌育苗基质,将基质均匀铺在特定的塑料农膜上,然后撒播拌有无土育苗专用肥的稻种。无土育苗具有防病、抗病、抗倒伏、保温性能好、透气和透水性强等特点,比土育秧节省成本1/3,比传统育秧增产12.7%,提高出米率4%。
Zhang Ran, an expert on rice in Chaowei Agricultural Research Institute of Inner Mongolia, said that soilless seedling is a method of cultivating seedlings by using stone powder as the substrate. It uses the special red ore in Inner Mongolia to expand the ore to 7 times at a temperature above 1400 ℃ Above, the formation of vitrified beads sterile germ-raising substrate, the substrate evenly spread on a specific plastic sheeting, and then spread mixed with soilless seedling special fertilizer of rice. Soilless seedling has the characteristics of disease prevention, disease resistance, lodging resistance, good thermal insulation property, strong permeability and water permeability, and saves 1/3 of the cost compared with soil-based seedling cultivation, and increases yield by 12.7% and 4%.