Potato field weeds compete with crops to compete for water, compete for fertilizer and compete for sunlight, resulting in a reduction in potato production. Weeds are controlled by three methods: mechanical weeding, manual weeding, and chemical control. Mechanical weeding mainly uses methods such as turning, picking, and hoeing to eliminate plough weeds. Manual weeding should be done in combination with loose soil and earth. Before cutting the seedlings, the roots of the weeds that have germinated on the surface of the seedlings can be cut off, so that the buds are exposed to the ground and sunburned. The weeding effect is good, and the temperature can be increased to facilitate emergence. After the seedlings emerge, they will be able to raise soil temperature in combination with loose soil to promote the development of the root system, shovel the second time, and shovel the roots of the weeds out of the sun for a day or two to cultivate soil. The plant type has been established in this period. This period is the high-yielding plant that promotes the formation of thick and leafy plants. It should be shoveled a third time to remove the weeds in the field and carry out the second pass. The control of weeds by pesticides should mainly be carried out after sowing and before emergence. Since potato leaves are sensitive to herbicides, medication should be used with caution. Generally used 50% acetochlor EC-1. 2 liters of water 380 kg sprayed on the ridge table, and then cover the film, weeding effect up to 90%. In addition, Sagequin can be used for each hectare of medicine. Spraying 5 kg of water and 40 kg can kill a variety of weeds. The control of farmland weeds should follow the principle of comprehensive prevention and control, that is, weeding a part of weeds before weeding, pre-emergence control of some weeds before emergence, and combining weeds and soils for artificial weeding at the time of planting and erecting. In this way, comprehensive measures can be adopted to basically eliminate weeds in the field, and the yield increase effect is generally above 10%.
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