<h2 class="newsinfo_title">识别假化肥,方法有四种</h2>
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		  <li>2012-6-29 9:15:00</li>    
		  <li>来源:中商网撰写</li>    
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					  <td width="60"><b>导读:</b></td>
					  <td>为使广大农民朋友正确选用化肥,平阴消协安城分会提醒广大农民朋友购买化肥时可采用以下方法加以识别,</td>
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					  <td width="60"><b>关键字:</b></td>
					  <td>假化肥</td>
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<div class="over_x"><p>为使广大农民朋友正确选用<a href="http://www.fert.cn/" target="_blank">化肥</a>,平阴消协安城分会提醒广大农民朋友购买化肥时可采用以下方法加以识别,以免上当受骗,造成不必要的损失。一、视觉识别:正规厂家生产的肥料,其外包装规范、结实,注有生产许可证、执行标准、登记许可证、<a href="http://www.hljtm.com/" target="_blank">商标</a>、产品名称、养分含量(等级)、净重、厂名、厂址等;假冒伪劣肥料的包装一般较粗糙,包装袋上信息标示不清,质量差,易破漏。氮肥(除石灰氮外)和钾肥多为结晶体,磷肥多为块状或粉末状的非晶体。优质复合肥颗粒和比重较均匀,表面光滑,不易吸湿和结块;而假劣肥料恰恰相反,肥料颗粒大小不均、粗糙、湿度大、易结块。氮肥除石灰氮外几乎全为白色,有些略带黄褐色或浅蓝色(添加其他成分的除外);钾肥白色或略带红色,如磷酸二氢钾呈白色;磷肥多为暗灰色。二、 触摸识别:将肥料放在手心,用力握住或按压转动,根据手感来判断肥料。利用这种方法,判别美国二铵较为有效,抓一把肥料用力握几次,有&ldquo;油湿&rdquo;感的即为正品,而干燥的则很可能是用复合肥冒充的。 三、 嗅觉识别:通过肥料的特殊气味来简单判断。如碳酸氢铵有强烈氨臭味;硫酸铵略有酸味;过磷酸钙有酸味。而假冒伪劣肥料则气味不明显。四、 燃烧识别:将化肥样品加热或燃烧,从火焰颜色、熔融情况、烟味、残留物情况等识别肥料。碳酸氢铵和氯化铵,直接分解,发生大量白烟,有强烈的氨味,无残留物;尿素,能迅速熔化,冒白烟,投入炭火中能燃烧,或取一玻璃片接触白烟时,能见玻璃片上附有一层白色结晶物;过磷酸钙、钙镁磷肥、磷矿粉等在木炭上无变化;硫酸钾、氯化钾、硫酸钾镁等在红木炭上无变化,只发出噼叭声。复混肥料燃烧与其构成原料密切相关,当其原料中有氨态氮或酰氨态氮时,会放出强烈氨味,并有大量残渣。(平卉)</p>
<p>(关键字:假化肥)</p></div>
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	<div class="pT25 t-r f14 cGray01">(责任编辑:01092)</div>
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