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在南方丘陵地区,潜育性稻田一般占水田面积的30％,多分布在地势低洼的冲垄田,种植水稻,前期形成僵苗不发,后期根系早衰亡,空壳率高,单产仅有200～300公斤,亩产比一般稻田低50～150公斤。实践证明,采用垄栽及其配套技术,可改善土壤的理论性状,提高肥料利用率,发挥边际效应,是改良这类低产稻田行之有效的方法。近3年来,我县垄栽改良潜育性低产田15.3万亩,平均每亩增产稻谷56.2公斤,增长14.1％,合计增产稻谷859.86万公斤,增加产值687.8万元,效果显著。
In southern hilly areas, the total area of paddy fields is 30% of that of paddy fields, mostly distributed in the low-lying red ridge fields. Rice is planted in the hilly areas. In the early stage, 200 ~ 300 kg, 50 ~ 150 kg lower than the average rice field. Practice has proved that the use of ridge planting and its supporting technologies can improve the theoretical properties of soils, improve fertilizer utilization, and play a marginal effect, is an effective method to improve such low-yielding paddy fields. In the past three years, the county has improved 153,000 mu of low-yielding cropland with improved fertility, with an average yield of 56.2 kilograms of rice per mu, up 14.1%. The total output of paddy rice increased by 8.5986 million kilograms, and the output value increased by 6.878 million yuan. The effect is remarkable.