摘要
通过对早、晚型种子包衣肥的pH值、包衣均匀度、包衣脱落率、初期溶出率、微分溶出率、养分累积释放曲线的测定,以及对衣膜结构、包衣水稻种子与未包衣的对照种子表面结构扫描电镜观察,研究了种子包衣肥的理化特性。结果表明:早、晚稻型种子包衣肥的pH值为5～6、包衣均匀度>96%、包衣脱落率<6.5%、养分初期溶出率<14%、养分微分溶出率<2%、养分累积释放曲线呈"S"型,说明种子包衣肥理化性能稳定,包衣效果与养分缓释效果良好。
Physical and chemical characteristics of seed-coating fertilizers were studied by means of determining the pH values,coating uniformity rates,coating off rates,nutrient initial-release ratios,nutrient micro-release ratios,nutrient accumulation-release curves of early and late rice seed-coating fertilizers,and observing the membrane structures of seed-coating fertilizers and the surface structures of the coated and uncoated rice seeds by SEM. Results showed that the pH values of early and late seed-coating fertilizers were 56,coating uniformity rates〉96%,coating off rates〈6.5%,nutrient initial-release ratios〈14%,nutrient micro-release ratios〈2% ,and the nutrient accumulation-release curves were S-shape. These results indicated the physical and chemical properties of seed-coating fertilizers were stable,and the effects of coating and nutrient slow-release were good.
出处
《中国农学通报》
CSCD
北大核心
2010年第20期217-221,共5页
Chinese Agricultural Science Bulletin
基金
国家农业科技成果转化基金资助项目(02EPN214300453)
湖南省农业科技成果转化基金项目(09NK4044)
湖南省教育厅重点项目(03A019)
关键词
肥料
种子包衣肥
理化特性
种子
水稻
fertilizer； seed-coating fertilizer； physical and chemical characteristics； seed； rice；
