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我站于1974年6月1日～4日(均为晴好天气),在城镇公社城南大队第六生产队进行棉花苗期(大麦收获后)灭茬松土与不松土的气象试验,观测保温、增温效应。试验选择一块2～3亩棉花田,前茬大麦已收获,一半进行松土,一半不进行松土。松土日期是6月1日上午。温度对比观测时间是:6月1日18时～6月3日16时止,共二整天48小时,每二小时一次,观测土壤表面温度;5公分深地温;10公分深地温;20公分深地温。土壤湿度每天观测一次,共3次,即6月2日、3日、4日,均在上午10时左右取土,用烘土法求土壤湿度％。
I stood in June 1, 1974 to 4 (all fine weather), in the town commune Chengnan Brigade sixth production team cotton seedling (after barley harvest) stubble soil and non-loose soil meteorological test observed insulation , Warming effect. The trial selected a 2 ~ 3 acres of cotton fields, barley has been harvested the previous crop, half of the loosening of soil, half without loosening. Loosening date is June 1 morning. Temperature comparison The observation time is: 18:00 on June 1 to 16:00 on June 3, a total of two 48 hours a day, once every two hours, the observed surface temperature of the soil; 5 centimeters deep ground temperature; 10 centimeters deep ground temperature; 20 cm Deep warm. Soil moisture observed once a day, a total of 3 times, that is, June 2, 3, 4, all at about 10 o’clock in the morning to take soil, with soil drying method for soil moisture%.