论文部分内容阅读
秋季低温是后季稻(部分晚稻)生产中主要的农业气象灾害,运用改善稻田小气候的方法,可减轻或避免低温危害。其基本原理之一是运用自由水面蒸发理论,适当抑制植株或稻田用于蒸腾(或蒸发)水分所消耗的热量。近年来在生产上使用灌水和水面保温剂,有效地增加稻田温度,促进根系吸水能力。但这些方法只能间接影响农田小气候。
The autumn low temperature is the major agricultural meteorological disaster in the production of the late rice (part of late rice), and the method of improving the microclimate in the rice paddy can reduce or avoid the low temperature damage. One of its basic principles is the use of free-surface evaporation theory to properly suppress the amount of heat consumed by plants or paddy fields for transpiration (or evaporation) of water. In recent years, the use of irrigation and water surface in the production of thermal insulation agent, effectively increase the paddy field temperature, promote root water absorption capacity. However, these methods can only indirectly affect the microclimate of the farmland.