干热河谷区农业种植模式的资源利用率研究

Study on Light,Heat and Water Utilization Efficiency of Cropping Patterns in Dry-Hot Valley Area

在云南省元谋县干热河谷区灌溉型坡地上,调查研究了6种不同种植模式的光能、热量和水分利用率,从中优选干热河谷坡耕地高效种植模式。分析研究表明,玉米—番茄和水稻—番茄模式对光能的利用率以及热量接纳系数相对较高,玉米—菜豆模式相对较差。玉米—番茄模式水分利用率最高,水稻—洋葱模式最低,仅为7.546 kg/mm.hm2。番茄因收获期最长,产量最高,市场价格稳中有升的趋势,使玉米或水稻—番茄模式深受农民欢迎,具有较好的发展前景。

In the irrigated sloping farmland of Yunnan Yuanmou County dry-hot valley area,the light,heat and water utilization efficiency of the six different cropping patterns were investigated,for optimization of the efficiency cropping patterns of dry-hot valley sloping farmland.Results showed that corn-tomato pattern and tomato-rice pattern on the utilization of solar energy,as well as thermal acceptance coefficient,were relatively higher,and corn-bean pattern was relatively common pattern.For water using efficiency,corn-tomato pattern was the highest 55.69 kg/mm·hm2,rice-onion pattern was the lowest 7.546 kg/mm·hm2.Tomatoes for the longest harvest period,the highest yields,and market prices steadily up trend,corn and rice-tomato pattern were favorably received by peasants with good prospects for development.