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测土配方施肥技术是国家级的科研推广项目,是农民节本增收的有效途径,辽宁省辽中县农业技术推广中心开展此项测试和推广工作已经2年了。做为基层的化验室工作人员,通过2年来的工作经验积累,我们发现在土壤和作物测试工作中,一般地说,采样误差常比现场操作误差、试剂误差、食品误差等偏大。所以一定要根据速测的目的和要求,注意采集有代表性或典型性的样品。下面将科学正确的土样采集方法介绍如下:
Soil testing and fertilizer technology is a national-level scientific research and promotion project, which is an effective way for peasants to increase income this year. It has been 2 years since Liaoning Central Liaoning Agricultural Technology Promotion Center conducted this test and promotion. As a grass-roots laboratory staff, through the accumulation of 2 years of work experience, we found that in the soil and crop testing work, generally speaking, the sampling error is often larger than the field operation error, reagent error, food error and so on. Therefore, we must take the purpose and requirements of the quick test, pay attention to the collection of representative or typical samples. The following will be scientific and correct soil sampling methods are described below: