塑料大棚种植蔬菜可以缩短生育期、周年连续生产、大幅度提高单产、均衡供应城市及工矿区的需要,国内外现已普遍采用。本院园艺所近年来在院内进行的大棚移植蕃茄生产试验,因棚内温度高、土壤水分蒸发量大,经常引水浇灌,表土快干板结,人工中耕因密植易折技,操作困难,故采用塑膜复盖土表,以保持土壤温湿度,但是杂草又发生繁茂,人工除草极为不便,为此,我组配合进行化学除草试验,现将初步结果简报如下。大棚蕃茄地杂草以马唐(熟地草)为主,有少量阔叶草。根据作物和杂草种类,选用 Planting vegetables in plastic sheds can shorten the growth period, continuously produce on the anniversary, substantially increase the yield per unit area, and provide a balanced supply of the needs of cities and industrial and mining areas. Now it is widely used at home and abroad. Horticultural Institute of our hospital in recent years in the greenhouse transplant tomato production test, due to the shed temperature is high, the large amount of soil moisture evaporation, water diversion, topsoil quick drying knot, artificial cultivation due to close planting easy, it is difficult to operate, so the use of Plastic film covered soil table, in order to maintain the soil temperature and humidity, but the weeds occur again, artificial weeding is extremely inconvenient, therefore, I group with the chemical weeding test, the preliminary results are as follows. Tomato greenhouse weeds to Cotinus (Rehmannia grass), with a small amount of hardwood grass. According to the type of crops and weeds, selection