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一、引言山垅田又称坑田,系山丘受流水侵蚀成谷地,被泥砂堆积和填高后,经劳动人民垦辟种植水稻而形成的一类山谷水田。这类山垅田的分布,遍及南方各省,面积广大,单以福建省来说,约526万亩,占全省水田总面积的60—70％。但它的单产很低,一般平均亩产百斤左右,少的亩产只有70—80斤。所以,改造山垅低产田,增加单产,成为今天大办农业大办粮食的重要任务。
I. INTRODUCTION Shanyangtian, also known as pit, is a type of valleys formed by the cultivation of paddy rice by working people after it was eroded into valleys by flowing water and was piled up and filled up by muddy sand. The distribution of these hillside fields extends to all provinces in the south, covering a vast area. For Fujian Province alone, there are about 526 million mu, accounting for 60-70% of the total paddy field in the province. However, its yield is very low, generally about 100 mu per mu, and only 70-80 kg per mu. Therefore, it is an important task for the large-scale agriculture to run large-scale food projects nowadays to rebuild Shanyuan low-yield fields and increase yields.