在水稻温室盘育苗(通称塑料大棚盘育苗)中,把苗床土的活性酸度调节到pH4—5,对培育壮秧和预防立枯病,是一项很重要的技术环节。关于苗床土的酸度调节方法,国内外已有一些报道。中日水稻技术交流学习班土肥组认为,用硝基腐殖酸或胡敏酸作为调酸剂较好。日本北海道农 In the rice greenhouse plate raising (commonly known as plastic greenhouse plate nursery), the activated soil acidity of the bed soil adjusted to pH4-5, to cultivate strong seedling and the prevention of autumn blight is an important technical link. About soil bed soil acidity adjustment methods, there have been some reports at home and abroad. Soil and Fertilizer Group of China-Japan Rice Technology Exchange Workshop held that it is better to use nitric humic acid or humic acid as the acid-adjusting agent. Japan Hokkaido farmers