How to use herbicides skillfully in planting traditional Chinese Medicinal Materials

Weeds in the field of medicinal materials not only win glory and strive for fertilizer, so that the growth and development of medicinal materials is poor, and the yield and quality will be reduced. Artificial weeding is when the summer is hot, hot exposure, for weeding sunburn skin, or the occurrence of heatstroke, not only increase the intensity of labor, but also increase the cost of production. In recent years, through the experimental study of herbicides, chemical weeding has achieved good results, established the concept of scientific farming, but also set up confidence for drug farmers to increase production and income.

[weeding before sowing] there are more weeds in annual seed reproduction. At the same time as cultivated land, no later than 7-10 days before sowing, before weeds germinated, 100-150ml per mu of trifluralin EC and 40-50kg of water were sprayed on the surface soil of medicinal materials, and 5-10cm or random watering was carried out immediately after spraying, but the effect was not as good as that of shallow mixing. Do not sow until 7-10 days after the herbicide. The weeding effect in the field is more than 90%. However, the herbicide has a poor effect on weeds such as Solanum nigrum and Xanthium, and has a good effect on Gramineae, Polygonaceae, Polygonaceae and Xanthaceae.

[weeding before seedling after sowing] after sowing, it takes a certain time for the medicinal materials to emerge, during which a variety of weeds will germinate and grow. when the weeds in the field are green, the weeds have not yet emerged. Chemical weeding is used to get rid of these green weeds. Gram per mu without trace, medicine farmers said to see Lvxie, 150-260 ml, 25-30 kg of water, field spraying, can kill all unearthed weeds. Because the herbicide is passivated and decomposed by soil, it has no effect on the ununearthed herbs, but it must be forbidden to use when the herbs emerge, so as to prevent the seedlings from being killed. Nongda water agent 150-200 ml, 30-40 kg of water can also be used for field spray control, and weeds die in 5-7 days.

[smear to control perennial weeds] for perennial fibrous root weeds such as White hair, Bermudagrass, Reed, Saping, Sophora frutescens, chicory, Castanopsis thunbergii, glyphosate can be used, the dosage is 100-200 grams per mu and the grass height is 10-15 cm, which has obvious weed control effect.

[weeding during growth period] after the emergence of medicinal materials, during the seedling growth period, annual Gramineae weeds grew in the field. When they grew to 3-5 leaves, they were mixed with 65-100 ml of napujing and 20-30 kg of water per mu, or Ganning, covered with herbaceous energy. the heart leaves of the weeds turned yellow and did not grow 3 days after spraying, and withered and rotted 7-10 days later, and gradually died. If it is leguminous medicine, you can use Acetochlor, feather can also be bought can use broad-leaf net.

[strict use of herbicides] attention must be paid to the specificity, timeliness, non-misuse, misuse and mixed use of herbicides to prevent the killing of seedlings. Strict use of drug metering, in order to avoid drug damage, the mixed use of more than two kinds of herbicides is to strictly grasp the proportion, application time and spraying technology. Pay attention to the isolation of pesticide application and the direction of the wind, so as to prevent the wind speed drift of the adjacent fields from causing the key points, at the same time, pay attention to the impact of herbicides on the next crop, master the time and technical essentials of herbicides, and need to mix herbicides with other pesticides, to be carried out under the guidance of technicians. Pay attention to the effect of environmental conditions on herbicides. Temperature, moisture, light, soil type, the size of leaves, the classification of families and genera, and the level of soil preparation all indirectly affect the effect of herbicides.