Using glyphosate to control weeds in tobacco fields

Tobacco is currently a kind of economic crop with better benefits in agricultural crops in our region. It has been accepted by the majority of growers and has played a major role in increasing agricultural income. However, tobacco has certain technical requirements in the planting process. In the year before planting tobacco, it is necessary to carry out field ploughing for deep-frozen hoeing to achieve the effect of preventing insects and grasses and loosening the soil, and promoting the early growth of tobacco. However, tobacco is moved in our area. The planting period is generally between March 25th and April 5th. At this stage, the temperature gradually rises, which is conducive to the growth of tobacco and the best time for weed growth. Weed seeds have certain control effects even though they are frozen in winter. Weeds can have a strong vitality. When it meets the appropriate temperature, it will germinate and grow. The growth of weeds will greatly hinder the growth of tobacco, affecting the effectiveness of tobacco, and removing the tobacco from the ditch. The use of herbicides in weeds is more economical, but tobacco has certain requirements for the use of herbicides. If used improperly, it will cause harm to tobacco. Weeds in tobacco fields generally have grasses and dicotyledonous weeds. For weeds weeds can generally be controlled by herbicides such as turfgrass, but the weeds of dicotyledon can not be prevented. For example, the herbicides that prevent dicotyledon can not be used to prevent other weeds. Through the comparison of the effects of various herbicides in the tobacco farmers in our district, the best effect is the use of glyphosate, which is a systemic extractive herbicide. It is mainly transmitted through the stems and leaves of weeds to the whole plant. Its prominent feature is that it can be absorbed by the stems and leaves and passed down to the underground rhizomes and tillers. It has strong destructive power to the underground tissues of perennial deep root weeds. The residual time in the soil is short, and there is no harm to the planting of tobacco in the next year, and the anti-grass effect on the tobacco field is good, and the stable production and yield increase of the tobacco is also promoted. Be sure to pay attention to the use of glyphosate in removing tobacco weeds, otherwise it will cause harm to tobacco. The specific use method is as follows: 1. Usage time: generally used after about 20 days after the tobacco seedlings are planted (before the large leaf period of tobacco leaves). 2, drug concentration: 250ML glyphosate water 20-25 kg. 3, medication method: (1) pay attention to the weather conditions: to choose sunny and windless and no rain after 6 hours of spraying, wait for morning dew after drying. (2): Select the field: There should be no obvious water accumulation in the ditch of the field to be sprayed, and the soil water content is not easy to be large (the maximum water holding capacity is less than 60%). 4:: Requirements for spray equipment: (1): The windshield must be used on the spray head of the sprayer to prevent the medicine from splashing onto the tobacco plant. (2): The nozzle must be lowered when spraying, the height of the nozzle should be lower than the height of the ridge, and the gas inside the cartridge should not be pressed too much when spraying, and the sprayer is not easy to walk.


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