【摘要】 为研究膜孔灌玉米农田整个生育期土壤温度时空变化,测定了膜孔灌和畦灌的玉米整个生育期的不同土层深度的土壤温度。研究表明:相同深度,14:00时膜孔灌和畦灌的土壤温度在各生育期相差最大,18:00时其次,8:00时最小;8:00时膜孔灌和畦灌的土壤温度在抽穗期后逐渐降低,而14:00时和18:00时在拔节期后逐渐降低;在整个生育期,14:00时膜孔灌和畦灌土壤温度在生育前期随土层深度变化较大,生育后期变化不大;在生育前期,膜孔灌的土壤温度大于畦灌的土壤温度,且随着生育时期的延长,膜孔灌和畦灌的土壤温度相差逐渐减小。以上研究可以为膜孔灌水热调控提供依据。更多还原

【Abstract】 In order to study the dynamical change of soil temperature of corn field under film hole irrigation,the soil temperature at different depths under border irrigation and film hole irrigation was measured.The result showed that the difference of soil temperature in different growth period at 14:00 was the most,at 18:00 was second,and at 8:00 was the least;at 8:00,the soil temperature of border irrigation and film hole irrigation gradually decreased after heading period,while gradually decreased after jointing stage at 14:00 and 18:00;in the whole growth period,at 14:00,the soil temperature changed largely with soil depth in the early period;the soil temperature under film hole irrigation was larger than that under border irrigation in the early growth period,and the difference of the soil temperature between film hole irrigation and border irrigation gradually decreased with the extend of growth period.The results provided the proof for the water and temperature regulation of film hole irrigation.更多还原