论文部分内容阅读
水稻节水灌溉是按作物生长发育需水机制,即按水稻不同生长发育阶段的生理和生态需水规律提供和调节灌溉用水,促进或控制水稻的生长发育,达到高产增收和经济节水的双重效益。水稻的节水灌溉关键是研究和分析水稻的田间耗水情况。水稻的田间水份消耗,由田间渗漏、植株蒸腾及棵间蒸发三部分组成。其中,植株蒸腾占耗水量的50%左右,但稻田的节水潜力主要是降低田间渗漏量,其次是减少棵间蒸发量,降低蒸腾量。水稻节水主要是在不影响水稻生
Rice water-saving irrigation is based on crop growth and development of water demand mechanism, that is, according to different growth and development stages of rice physiological and ecological water demand and regulation of irrigation water supply and control to promote or control the growth and development of rice to achieve high yield and economic double water benefit. Water-saving irrigation of rice is the key to research and analysis of rice field water consumption. Rice field water consumption, leakage from the field, plant transpiration and evaporation of three parts. Among them, the transpiration of plants accounts for about 50% of the water consumption, but the water-saving potential of paddy fields is mainly to reduce leakage in the field, followed by the reduction of transpiration and transpiration. Water-saving rice is mainly does not affect the rice raw