1.平田式要求加高加固田埂,一般田埂高50~70厘米,宽50厘米左右。田内开挖鱼沟或鱼溜,鱼沟深30~40厘米,宽30~50厘米。田块四周开挖环沟,中央开挖“十”字形中央沟。中央沟与环沟相通,环沟两端与进、排水口相接,沟面积应占田块面积的5%~8%。设计亩(1亩=667平方米)产鱼量为30千克 1. Hirata-type requirements to heighten the ridge Tian, ​​generally Tian 埂 high 50 to 70 cm wide and about 50 cm. Trench excavation fish ditch or fish slip, ditch 30 to 40 cm deep, 30 to 50 cm wide. Field around the excavation ditch, the central excavation “ten” glyph central ditch. The central ditch and ring ditch interlinked, both ends of the ditch and the inlet and outlet connections, ditch area should account for 5% to 8% of the land area. Design acres (1 mu = 667 square meters) produce 30 kg of fish