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在没有仪器的情况下,用目测上壤湿度,也是比较准确的。现将具体方法介绍如下; 目测土壤湿度的时间.最好在中午11～13时进行,并选择在土壤结构和土壤性质有代表性的地块进行。对土壤含水量可分为五级: 一级用手握土能成团,有水从指缝中流出,当往地上扔时,泥浆四溅。一级为土壤过湿,对作物生长不利。
In the absence of equipment, with the visual soil moisture, is also more accurate. The specific methods are described below. The time for visualizing soil moisture is best carried out between 11 and 13 o’clock noon, and is selected in representative plots of soil structure and soil properties. Water content of the soil can be divided into five levels: one can hold the soil into a group, water outflow from the fingers, when the ground throwing, mud splash. The first is the soil is too wet, adversely affect crop growth.