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测定土壤水分用的土钻种类是很多的,主要是依试验的目的与土壤的质地的不同来决定它的形式。根据我们近几年来的观察结果,耕作或轮作试验中不同处理,土壤水分的相差范围,往往可达地面下150厘米,甚至要更深些,因此需要一种即能取深层土,又利于取浅层土,还要便于携带的土钻,以便适于在各种场合下应用。因此我们就参考
There are many types of earth drills used to determine soil moisture, mainly depending on the purpose of the test and the soil texture. According to our observations in recent years, different treatments in tillage or rotation trials, the range of soil moisture differences, often up to 150 cm above the ground, or even deeper, so you need a that can take deep soil, but also conducive to take the shallow Soil, but also easy to carry earth drill, in order to be suitable for a variety of occasions. So we will reference