寒地井灌稻区增设３％面积的晒水池、宽浅式灌区延长水路及灌渠覆膜对井水都有不同程度的增温作用，使水稻增产９．２％～１８．１％。 An additional 3% area of ​​basins in well and irrigated rice areas was extended. Extensive irrigation of waterways and irrigation channels in wide-and-shallow irrigation areas had different degrees of warming effects on well water, yielding a yield increase of 9.2% to 18.1% for rice.