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1985～1986年,我们在本场十队进行了桔园地膜(聚乙烯)覆盖试验和薄膜(聚氯乙烯)覆盖比较试验,以进一步探讨地膜对改善本地区柑桔越冬根系生态环境及对地上部分的影响,现将试验结果小结如下。试材和方法试验时期为1985年12月16日～1986年3月16日(共90天),地点为十队四年生早熟温柑园。采取互比排列法,设地膜覆盖、培土+地膜覆盖、培土及对照四个处理。每处理四个重复,共设16个小区,每个小区5株树。供试样本干周变异系数为2.4％。另设培土+薄膜覆
From 1985 to 1986, we compared the orange plastic film (polyethylene) covering test and the thin film (polyvinyl chloride) covering test in the 10th group in this field to further explore the effect of plastic film on improving the ecological environment of overwintering root system of citrus in this area and on the ground Part of the impact, the test results are summarized below. Test materials and methods The test period is from December 16, 1985 to March 16, 1986 (a total of 90 days), place for ten four-year-old Weng citrus garden. To take the mutual arrangement method, set mulching, earthing + mulching, earthing and control four treatment. Each treatment of four repetitions, a total of 16 cells, each tree 5 trees. The dry week variation coefficient of the sample was 2.4%. Another soil + film cover