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广大贫下中农在长期生产实践中,对土壤墒情的观察和鉴别,积累了丰富的经验,可以凭借手的触觉和目观土壤的状态,确定土壤墒情,用墒情估计土壤含水量,无需进行水分测定。土壤的墒情,因土壤性质而有差别。土壤墒情一般分干土、灰墒、黄墒、褐墒、黑墒五级,其鉴别方法分述于下: 一,砂性土壤的验墒 1.干土:手触无湿的感觉,干土成块状或单粒,含水量约3％左右。播种后不
In the long-term production practice, the majority of poor peasants and middle peasants have accumulated rich experience in the observation and identification of soil moisture. Soil moisture can be determined by hand touch and the state of the soil. Soil moisture can be estimated by soil moisture without the need for moisture determination . Soil moisture, due to the nature of the soil is different. Soil moisture is generally divided into dry soil, gray soil moisture, yellow soil moisture, brown moisture, dark soil moisture five, the identification method is described in the following: First, the soil moisture soil moisture 1. Dry soil: touch the feeling of wet, dry Soil into lumps or single grain, about 3% moisture content. Not after sowing