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(一)解放前概况:我所农業化学组於1938年成立,主要工作,为土壤調查,地力测定,肥料試驗,及水土保持等项。土壤調查工作,自1938年起,迄已調查二十二縣印出報告十四縣。地力测定工作,自1938年,起至1950年,已作126个试验該項試驗分佈四川境內四十一縣,從126個試驗中大約可了解四川農田土壤平均有77.4%缺乏氮素,30.2%缺
(A) Overview before liberation: Our Agricultural Chemistry Group was established in 1938, the main work, for soil investigation, determination of fertility, fertilizer testing, and soil and water conservation and other items. Soil survey work, since 1938, has investigated 22 counties reported fourteen counties. Geodesy determination, from 1938 until 1950, 126 tests have been made This test is distributed in forty-one counties in Sichuan Province, from about 126 experiments can understand that an average of 77.4% of Sichuan farmland soil lack of nitrogen, 30.2% lack