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受省农林局的委托,我所于1978年4月11日至13日举办了林地土壤及林木植株养分测定学习班,参加的人员有来自我省林桑茶果的科研单位、林业（多管）局及基层场圃共十六人。 这次学习班主要以养分速测为主。测定项目有土壤含水量、有机质、含盐量、速效磷、速效钾及林木植株氮磷钾的测定,其中除含水量、有机质、含盐量用化学方法速测外,其余均用75型光电比色法进行测定。通过短期学习,同志们已初步掌握上述项目的
Commissioned by the Provincial Bureau of Agriculture and Forestry, we held a workshop on soil nutrient measurement of forest soils and plant trees from April 11 to April 13, 1978, with participants from scientific research institutes of Lin Sang Cha fruit in our province, forestry ) Bureau and grassroots field nursery a total of 16 people. This class mainly to speed measurement based. Determination of soil moisture content, organic matter, salinity, available phosphorus, available potassium and nitrogen, phosphorus and potassium plant trees, in addition to water content, organic matter, salt content measured by chemical methods, the rest are used 75 photoelectric Colorimetric determination. Through short-term study, comrades have initially mastered the above items