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兴国县农科所于1978～1979年连续进行了光质对红萍生长影响的试验,获得初步结果。试验从1978年夏季开始,用盆养萍,设黄膜、无色膜、兰膜、红膜、绿膜五个处理,以不盖膜为对照。1979年又在春、夏、秋三季进行重复试验。春季分大田试验和玻缸营养液试验,夏、秋两季进行盆养试验,除绿膜改用紫膜处理外,其余处理均与1978年夏季同。试验期间,进行了水温、相对湿度、光照强度、叶绿素、固氮活性等项目的测定,并进行了分萍和小区验产。试验初步结果,春季盖膜各处理产量均低于对照区,表现负效应。夏季用兰膜复盖的红萍,未发现萍丝虫为
Xingguo Academy of Agricultural Sciences in 1978 ~ 1979 continuous light quality of Hongping growth test, to obtain preliminary results. Experiments from the summer of 1978, with potting Ping, set yellow film, colorless film, blue film, red film, green film five treatment, to not cover the film as a control. In 1979 again in spring, summer and autumn repeated tests. Spring sub-field trials and glass tank nutrient solution test, summer and autumn pots were tested, with the exception of the green film to purple membrane treatment, the rest of the treatment with the same in the summer of 1978. During the experiment, the water temperature, relative humidity, light intensity, chlorophyll, nitrogen fixation activity and other projects were measured, and the sub-Ping and district inspection. Preliminary results of the experiment, the spring cover film yield was lower than the control area, the performance of the negative effect. Red Lan Ping covered with blue membrane in summer, did not find the wire worm for