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随着汾河水库调蓄能力的下降,加之工业挤占农业用水,汾河灌区灌溉水源日趋紧张。但汾河一坝灌区内的稻田仍采用传统的种植、灌溉模式,灌溉用水量最高达3万m3/hm2,浪费水现象很严重。而且还存在着水稻与小麦灌溉用水的矛盾。为此,我们对水稻节水灌溉技术进行了试验研究,结果表明,新的栽培、灌溉技术旱育秧、旱整地、浅湿间歇灌溉比传统的水育秧、水整地、深水灌溉有明显的节水、增产效果。旱育秧比水育秧多栽6.7倍的本田,折合到本田灌溉用水量减少90%以上,节约投资73%;旱整地比水整地节约泡田用水量37.8%,减少灌溉水量1362m3/hm2;本田生长期实行浅湿间歇灌溉的灌溉制度比深水淹灌每公顷可增产1056kg,增产率20.1%,田间耗水量减少6051m3/hm2,节水29.6%。
With the decrease of regulation and storage capacity of Fenhe Reservoir and the industrial occupation of agricultural water, the irrigation water source in Fenhe Irrigation District has become increasingly tense. However, the paddy fields in Fenhe Irrigation District still use the traditional planting and irrigation modes, and the irrigation water consumption is up to 30,000 m3 / hm2. The phenomenon of waste water is very serious. But there is also the contradiction between rice and wheat irrigation water. Therefore, we conducted a pilot study on rice water-saving irrigation technology. The results show that the new cultivation, irrigation technology dry nursery seedling, dryland preparation, shallow wet intermittent irrigation than the traditional watering seedlings, water preparation, deep water irrigation obvious water conservation , Increase production effect. Hedo seedling planted more than 6.7 times the number of transplanting seedlings Honda, equivalent to Honda irrigation water consumption reduced by 90% or more, saving 73% of investment; dry land to water than the water saving fry field water 37.8%, reducing irrigation water 1362m3 / hm2. The irrigation system of intermittent irrigation with shallow wetness during the growth period of Honda could increase the yield by 1056kg per hectare and increase the yield by 20.1% compared with the deep-water flooded irrigation. The field water consumption decreased by 6051m3 / hm2 and the water saving by 29.6%.