Plastic film weed control measures

Ganzhou Garlic is mainly cultivated with plastic film covering technology, which can increase the temperature of the soil, reduce the freezing damage during the seedling stage, and prevent evaporation of the ground water. However, the temperature and humidity conditions under the mulching film are suitable for the growth of weeds, and the amount of weeds in the spring and fall seasons is large. Usually the top-breaking mulch affects the growth of garlic, which has a great influence on the high quality and high yield of garlic.

According to the survey, the weeds in the mulching field in Ganzhou City are mainly divided into two broad categories: broad-leaved and Gramineae, of which broad-leaf weeds include Veronica, Cinnamomum camphora, Amaranthus cinnamomum, Vitis davidiana, S. sophia, B.sinensis Grasshoppers, grasses such as wild oats, crabgrass, hardgrass, auntie, goosegrass, green foxtail, etc. Most of the weeds emerged in October-November and returned to green in March of the second year. They bloom in April and mature in May-June.

In the field of plastic film grown in weeds, comprehensive control measures should be taken. (1) Rotation. The garlic field with broad-leaved weeds has been cropped once every 3 to 4 years. Using wheat field herbicides can kill most of the broad-leaved weeds in the current season, and can no longer harm the future of garlic. (2) Deep plowing. Deep plowing can inhibit the germination of weed seed in shallow surface soil, and it is also beneficial to the preservation of earthworms, warming, ventilation, and the development of garlic roots. (3) Chemical control. After the garlic is sown and covered with soil, it is treated with a soil blocking agent before the film is covered, and it is difficult to remove the film after covering the film. At present, the commonly used soil sealing treatment agents include pendimethalin, oxyfluorfen, acetochlor, and metolachlor, which can be selected according to the field grasses. Requested drugs field flat, fine soil, good lyrical, in order to facilitate the formation of soil surface film. When spraying, it is necessary to withdraw and fight while playing back and covering the membrane. The foot should not step on the place where the drug has been played so as not to affect the formation of the drug film and reduce the weeding effect.

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