【摘要】 本文从1982—1984年连续3年在集安县头道乡进行了蓝色塑料薄膜和无色薄膜培育水稻秧苗的试验,观察不同颜色薄膜对水稻秧苗素质的影响。通过试验我们认为蓝色比无色塑料薄膜培育的秧苗素质好,叶绿素含量增加,干物重和发根力明显提高。平均每亩增产39斤,而蓝色膜比无色膜每亩节省114.5元。更多还原

【Abstract】 Experiments on cultivating rice seedlings under both blue and colorless plastic films were carried out over the period between 1982 to 1984 in Joudao district, Jian County, Jilin Province. Results show the average temperature under the blue plastic film was 0.4-0.9℃ higher than that under the colorless one. And the quality of the seedlings cultivated under the blue plastic film was better than that under the colorless one -1.38% increase in chlorophyll content, higher dry weight of seedligns and ability of forming roots, as well as 114.6 yan decrease in field cost.更多还原