半旱式垄作栽培水稻,从根本上改变了地表物相性质,土壤热容量降低,导温率和导热率显著增大,土壤吸收的太阳辐射能增多。并且,垄埂不同位置,时间吸收的太阳辐射能具有明显的差异,使近地面大气层同土壤之间的热能交换高,土壤内热通量增大一倍或若干倍,热运动影响土层20cm以下。土壤热代谢增强,有助于有效穗和穗粒数的提高。水体的稳温效应在保证水稻分蘖方面有重要意义。 Semi-arid ridge cultivation of rice, fundamentally changed the nature of the surface of the earth, soil heat capacity decreased, the thermal conductivity and thermal conductivity increased significantly, the increase of solar radiation absorbed by the soil. Moreover, there are obvious differences in the solar radiation absorbed by different places and time in the ridge. The heat exchange between the near-surface atmosphere and the soil is high, and the heat flux in the soil increases one time or several times. The thermal movement affects the soil below 20 cm . Enhanced soil thermophilic metabolism, contribute to the effective panicle and grains per spike. Water temperature stability effect in ensuring tillering of rice is of great significance.