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井水水温较低,含有机质少,能降低土壤温度,影响水稻行间气温。而水稻是喜温作物,长期使用冷水灌溉,会影响水稻生育,降低水稻产量。因此,千方百计提高井水温度,改进灌水方法,是井灌稻区的大事。1.晒水增温:可以利用蓄水池、灌水渠道晒水,提高水温。水池、渠道面要大些、深度要浅,以增加受光面积,迅速提高水温。蓄水池出口应设在池的上部,用上面的温水灌田。如利用比较大的灌排渠道晒水,可采用上溢式闸门。育苗用水,可在苗田附近,按苗田面积大小,临时增设蓄水池,待水温提高后再灌(或喷)苗田。
Well water temperature is low, with less organic matter, can reduce soil temperature, affect the temperature between rice lines. The rice is a thermophilic crop, long-term use of cold water irrigation, will affect rice growth, reduce rice yield. Therefore, do everything possible to raise the temperature of well water, improve irrigation methods, well irrigation area is a major event. 1. Sunburn warming: You can use the reservoir, irrigation channels, water, water temperature. Pool, channel surface to be larger, shallow depth, in order to increase the light receiving area, quickly raise the water temperature. Reservoir outlet should be located in the upper part of the pool, with warm water above the field. Such as the use of irrigation and drainage channels relatively large, can be used overflow gate. Nursery water, can be in the vicinity of Miaotiao, according to the size of the seedling area, a temporary additional reservoir until the water temperature increase irrigation (or spray) seedlings.