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西师生物系自拟课题“冬水田稻鱼萍丰产试验研究”,在西农农学系和蔡家公社等单位的大力协作下,从1980—1983年,经过四年的正式试验研究.先后在北碚蔡家公社两个大队的三个生产队进行了小区和大田的多点试验,1983年又经蓬溪、合川等县较大面积的推广试验,试验结果证明,该课题是以农田生态学的观点,立足于从改革冬水田的耕作制度着手,根本改变水稻的常规栽插方式,从而解决一般稻田养鱼方法中稻和鱼的种养关系,并采用养萍培肥为红线贯穿全试验过程,在稻田中增加了固定空中N素物质的重要途径 可达到肥水养鱼.肥土确保水稻稳产高产,大大提高了冬水田的肥力.加上水稻宽行间开沟方便易行.更有利于水稻前期的排水晒田和湿润生长条件,因此能有效地解决冬(囤)水田水稻稻坐蔸的问题.该研究是综合开发利用冬(囤)水田的有效途径,它既可囤水养鱼,又可防止伏旱和春旱等,还可对稻田进行免耕培肥,从而达到省工、省肥、资源利用率高,综合经济效益显著之目的,一般每亩年产水稻在900斤左右,鱼过100斤,萍达1.5百斤以上,年亩纯收入比对照田净增150元以上.
West division of the Department of Biology, a self-study project “paddy fish in winter paddy field yield test”, in the Department of Agronomy and Cai Tsai commune and other units of the strong collaboration, from 1980 to 1983, after four years of formal experimental study Beibei Cai Tsai commune two brigades of the three production teams conducted a multi-site plot and field trials in 1983 and Pengxi, Hechuan County, a larger area of the promotion test, the test results show that the subject is farmland ecology Based on the reform of winter paddy field farming system to start, fundamentally change the conventional planted rice way to solve the general method of fish farming in rice paddy and fish planting and breeding relations, and the use of fertility as fertilizer red line throughout the entire test process , An important way to fix N airborne matter in the rice field is to reach the fertilization and fish culture.Fertilizer can ensure the stable and high yield of rice and greatly increase the fertility of winter paddy field.It is more convenient Therefore, it can effectively solve the problem of paddy rice sitting in paddy field in winter.This study is an effective way to comprehensively develop and utilize paddy field in winter, which can store water and fish , Can prevent the drought and drought, etc., but also for no-till paddy cultivation, so as to achieve the provincial labor, provincial fertilizer, high resource utilization, comprehensive economic benefits for the purpose of the general, with an annual output of about 900 kg of rice per mu, fish Over 100 pounds, up to more than 1.5 pounds Ping, net income per year than the net increase of more than 150 yuan.