[名词解释] 灌溉水源(water sources for irrigation)
[名词解释] 节水灌溉(water-saving irrigation)
[名词解释] 农田水利(irrigation and drainage)
[名词解释] 水利计算(analysis of irrigation water resources)
[填空题] 英译中(Translate):sprinkling irrigation()
[单选题]He may also need money to construct irrigation_______and improve his farm i
[单选题]地面灌溉中,为了节水应采用()灌溉?A .漫灌B .大畦灌溉C .小畦灌溉D .沟灌
[单选题]温暖季节灌溉会引起(),寒冷季节灌溉可以()。A . 保温、降温B . 降温、保温C . 降温、增温D . 增温、降温
[单选题]全面灌溉即灌溉水湿润整个农田植物根系活动层内的土壤的灌溉,包括地面灌溉和()两类。A . 喷灌B . 渗灌C . 涌泉灌D . 滴灌