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据国外资料报导。近年来应用塑料薄膜覆盖于水稻(秧田)、玉米、蔬菜、茶园等多种作物田间,对土壤增温保湿有良好的效果,同时对杂草也有一定的控制作用。我院园艺所在塑料大棚栽培蕃茄试验中,为了克服土壤水分蒸发快,经常灌溉又引起土表板结,密植条件下人工中耕困难等问题,采用有色及透明膜覆盖土表,观察对土壤增温保湿以及蕃茄生长的效应。我们配合调查了不同色质的塑料薄膜控制杂草的效果,为进一步选用有色膜覆盖、减少用药、降低成本提供依据。塑料大棚内于9月13日定植蕃茄后覆盖塑膜;9月13日每处理随机取样4尺~2,分别调查马唐及阔叶草的鲜重,计算
According to foreign reports. In recent years, the application of plastic film covered in rice (seedling), corn, vegetables, tea and other crops in the field, the soil temperature and humidity have a good effect, but also have some control of weeds. Horticulture in our hospital plastic greenhouse cultivation tomato experiment, in order to overcome the rapid evaporation of soil moisture, irrigation often caused by soil surface board knot, close planting difficulties in artificial cultivation and other issues, the use of colored and transparent film covering the earth’s surface, observe the soil temperature and humidity And the effect of tomato growth. We cooperate with the investigation of different color plastic film control weeds, in order to further use colored film coverage, reduce medication, reduce costs provide the basis. The plastic greenhouse was covered with plastic film after the tomato was planted on September 13; on September 13, the fresh weight of the crabgrass and broadleaf grass