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我国湖区平原有很多平坦宽阔的农田,由于地下水位高,没有修建合理的水利设施,影响了稻田生态经济效益。以水田面积515万多亩的洞庭湖区来说,潜育化稻田约占60%,每亩一般比没有潜育化的稻田减产200—400斤,严重的颗粒无收。据估计,洞庭湖区因土壤潜育化每年损失粮食约10亿多斤。怎样解决稻田潜育化,创造农田的合理生态结构,这是很多人极为关心的问题。本文拟就这一问题进行探讨。
There are many flat and wide farmland in the plain of the lake in our country. Due to the high groundwater level, there is no reasonable water conservancy facilities to be constructed, which affects the ecological and economic benefits of paddy fields. With a paddy field area of 5.15 million mu of Dongting Lake area, gleaming paddy fields account for about 60% of the total, and the yield per mu is 200-400 kg less than that of the non-gleaming paddy fields. The serious particles are not collected. It is estimated that about 1 billion kilos of grain are lost annually in Dongting Lake due to soil gleization. How to solve the gleam of paddy fields and create a reasonable ecological structure of farmland is a problem that many people are extremely concerned about. This article intends to discuss this issue.