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根据1984年5～6月在山东蒙阴山地果园内的地膜覆盖与无覆盖的辐射平衡、热量平衡的小气候的观测,对辐射能与热能收支作了计算和分析,得到下列初步结果: 1.覆膜增大了白天的辐射平衡而减小了夜间的辐射平衡。2.覆膜减少了土壤蒸发,净辐射主要用于植株的蒸腾。3.覆膜改变了土壤热性质。土壤热容量、土壤导热率和土壤导温率都比无覆盖的大。地膜覆盖显著增加产量,为一种有效改善山地果园小气候的农业措施。
According to the observation of microclimate covered by mulch and uncovered radiation balance and caloric balance in May-June 1984 in the orchard of the mountainous area in the mountainous area of Meng-Yin Mountain in Shandong Province, the calculation and analysis of the radiation and thermal energy budget were carried out. The following preliminary results were obtained: 1 The film increases the daytime radiation balance and reduces the nighttime radiation balance. 2. Film coating reduces soil evaporation, net radiation is mainly used for plant transpiration. 3. Film has changed the thermal properties of soil. Soil heat capacity, soil thermal conductivity and soil thermal conductivity than non-covered large. Mulching significantly increases yield and is an agricultural measure that effectively improves the microclimate in mountain orchards.