水稻旱育苗技术现推广已有20多年,大量采用山地腐殖土和优质旱田土做育苗土,造成旱田耕层土壤及山地植被严重破坏。同时由于春季回暖晚、土壤化冻迟、取土难、不能适时播种;药害重、影响水稻秧苗的正常生长发育;有害物质残留量大,不利于绿色食品的生产。水稻新基质无土 Nowadays rice cultivation techniques have been widely used for more than 20 years. Large amounts of mountain humus soil and high quality dryland soil are used as seedling nurseries, resulting in serious damage to the topsoil and mountainous vegetation in the drylands. At the same time as the spring warmer late soil thaw late, difficult to take soil, not timely sowing; heavy drug injury, affecting the normal growth and development of rice seedlings; residues of harmful substances is not conducive to the production of green food. The new rice substrate is soilless