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在三江平原,随着农业种植结构的调整,农民对发展水田有了新的认识,形成了井灌水稻热潮,井灌区面积逐年增加,使农民的粮食产量增加,经济收入提高。然而在该地区有的地方由于对地下水资源缺乏科学的论证和管理,造成井灌水稻亩产逐年减产。因此,在井灌区规划时,要注意以下3个主要问题:一、地下水资源量。首先要搞清楚该地区的地下水资源情况,包括地下水储量(永久储量、调节储量、动储
In the Sanjiang Plain, with the adjustment of agricultural planting structure, farmers have gained a new understanding of the development of paddy fields and formed a boom in well irrigation rice. The area of well irrigation areas has increased year by year, which has enabled peasants to increase their grain output and increase their economic incomes. However, in some areas in the region, due to the lack of scientific demonstration and management of groundwater resources, the annual yield reduction of well-irrigated rice crops has been reduced year by year. Therefore, in the well irrigation planning, we should pay attention to the following three main issues: First, the amount of groundwater resources. First of all, we must clarify the groundwater resources in the area, including groundwater reserves (permanent reserves, regulatory reserves, reserves