文档介绍：County continuation records has examined and approved the draft, spirit, believe, comprehensive Yearbook of zhuanglang a将所学知识与实际情况相结合，到达学以致用的目的。
County continuation records has examined and approved the draft, spirit, believe, comprehensive Yearbook of zhuanglang already prepared draft, entered the phase of evaluation. Civil air defense work
County continuation records has examined and approved the draft, spirit, believe, comprehensive Yearbook of zhuanglang already prepared draft, entered the phase of evaluation. Civil air defense work
County continuation records has examined and approved the draft, spirit, believe, comprehensive Yearbook of zhuanglang already prepared draft, entered the phase of evaluation. Civil air defense work
二、实****主要内容：
实****工具：
仪器：：挖掘土壤剖面
：确定土壤的pH值和P含量
：测定土壤的pH和P含量
：整理土壤剖面，检查岩石硬度
：测定土壤发生层厚度
：钻取不同深度的混合土壤
试剂：：测定土壤pH值中显色
〔1：3〕：用于测定碱性土壤的石灰性反应
：测定土壤P含量中显色
测定方法：
：无—“-”；一般—“+”；中等—“++”；剧烈—“+++”。
：取黄豆粒大小的土粒于白瓷板中，加入酸碱指示剂，淹没土壤，显色半分钟，用比色卡二进行比色。
：取黄豆粒大小的土粒于白瓷板中，加入含磷试剂，淹没土壤，用镊子夹取锡粒在瓷板边缘来回磨动〔锡具有复原性〕，待颜色有明显变化后，用P含量比色卡比色〔蓝色深浅与P含量呈正相关〕。
County continuation records has examined and approved the draft, spirit, believe, comprehensive Yearbook of zhuanglang already prepared draft, entered the phase of evaluation. Civil