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采取土样进行理化性质分析,是科研和生产活动中认识和研究土壤的本质和变化的一个频繁而重要的手段。至今,野外取土工具——无论是土壤调查抑或土壤农化田间试验——都通用一般土钻取土。常用的土钻全部铁质,重7.5斤,长1.4米,价值百元左右。在取土层较浅条件下,尤感携带和使用不便,特别是水田取土非常费力。为此,在长期工作实践中,我们设计了一种简易取土钻取代一般常用铁质土钻。在试验地田间取土,取用耕层或
The analysis of physical and chemical properties using soil samples is a frequent and important tool for understanding and studying the nature and changes of soil in scientific research and production activities. To date, field earth-harrowing tools - either soil surveys or field agro-field experiments - have generally been used for earthmoving. Commonly used all the earth-boring iron, weighing 7.5 pounds, 1.4 meters long, worth about 100 yuan. Under the condition of shallow soil acquisition, it is very inconvenient to carry and use, especially the paddy soil is very laborious. For this reason, in the long-term working practice, we designed a simple earth-boring drill to replace the commonly used iron earth boring. Take soil in the experimental field, take the tillage or