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为搞清气象因子与苗木生长的关系,提高育苗水平,我们对此进行了试验,取得一些数据以供参考。一、试验的基本情况1.试验地点本试验是从1980年初至1982年2月底,在学院苗圃地进行,该地土质为石灰质粘土,pH=8.5,有机质含量2.5％、全氮0.18％、磷为0、速效钾8.5PPm。共5个树种,1800株苗木。2.观测方法和资料(1981年)气象资料由每天三次定时观测而得。项目有平均气温、最高和最低气温、相对湿度、0-20
In order to understand the relationship between meteorological factors and the growth of seedlings and raise the level of nursery, we conducted experiments and obtained some data for reference. First, the basic situation of the test 1. Test Location This experiment was carried out from the beginning of 1980 to the end of February, 1982 in the college nursery, the soil is calcareous clay, pH = 8.5, organic matter content 2.5%, total nitrogen 0.18%, phosphorus Is 0, available potassium 8.5PPm. A total of five species, 1800 seedlings. 2. Observation Methods and Information (1981) Meteorological data are obtained from three times a day regularly observed. The project has average temperature, highest and lowest temperature, relative humidity, 0-20