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一、试验目的一、试验目的上海郊区发展三熟制以后,土壤淹水时间延长,水稻根系活力降低,尤以松、金、青低洼地区更为突出。为了解决这个问题,我们进行了稻田暗管排水的试验,结果表明采用暗管排水可控制地下水位,使灌溉水下渗,补充耕层中的氧气,稀释和排除有毒物质,从而更新土壤环境,缓和水气矛盾,增强根系活力,是争取大穗、活熟、高产的重要措施。
First, the purpose of the experiment First, the purpose of the experiment After the development of three suburb system in Shanghai suburbs, the prolonged flooding of soil, rice root activity decreased, especially in the pine, gold and green low-lying areas more prominent. In order to solve this problem, we conducted a trial of underground pipe drainage in paddy field. The results show that the use of underground pipe drainage can control the water table, infiltrate the irrigation water, replenish the oxygen in the topsoil, dilute and eliminate toxic substances, so as to update the soil environment, To ease the contradiction between water and gas, and enhance the vitality of the root is to fight big ears, live and work, an important measure of high yield.