当前位置: 首页 > 文章 > 利用牡蛎壳粉制备缓释氮肥的初步研究 广东海洋大学学报 2007,27 (6) 90-92
Position: Home > Articles > Study on Oyster Shell Powder for Preparation of Slow-release Nitrogenous Fertilizer Journal of Guangdong Ocean University 2007,27 (6) 90-92

利用牡蛎壳粉制备缓释氮肥的初步研究

作  者:
苗艳丽;洪鹏志;宋文东
单  位:
广东海洋大学理学院;广东海洋大学科研处
关键词:
牡蛎壳粉;氮肥;缓释度;制备
摘  要:
目前我国化肥当季利用率中,氮约为30%~35%,磷为10%~25%,钾为35%~50%远低于世界发达国家水平[1],造成肥料利用率低的主要原因是淋溶损失,尤以氮肥、钾肥为最。人们正在努力寻求提高肥料利用率的方法,其中之一是对肥料本身进行改性,开发适合于作物生长需求的新型肥料[2]。研制缓/控释肥料是世界各国普遍采用的有效措施之一。缓释肥料的优点是利用率高,养分损失少,环境友好[3,4]。但是,目前所用的作为缓释材料的高分子聚合物一般是难降解或不能降解,长期施用也会引起土壤污染。牡蛎壳为一种新型的天然材料,具有无毒、无污染、无公害的优点。而且,能为土壤微生物提供钙源和氮源,改良土壤微生物的群落结构,并间接的提高土壤肥力,是一种极有前途的土壤改良和调理剂,特别适合作为大棚酸化土壤的
译  名:
Study on Oyster Shell Powder for Preparation of Slow-release Nitrogenous Fertilizer
作  者:
MIAO Yan-li1,HONG Peng-zhi2,SONG Wen-dong2(1.Science College,Guangdong Ocean University,Zhanjiang 524025,China)(2.Research Department,Guangdong Ocean University,Zhanjiang 524025,China)
关键词:
Oyster shell power;nitrogenous fertilizer;release degree;preparation
摘  要:
The slow-release nitrogenous fertilizer was prepared with oyster shell powder as main material.And release degree and the ability of retaining water of the nitrogenous fertilizer were investigated.The result indicated that the release effect of the fertilizer related to the content of oyster shell powder.The second prescription had good release effect in this test.The slow-release nitrogenous fertilizer has sustained-release function and the ability of retaining water.

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