In order to quickly remove turf weeds, the use of herbicides is the most convenient means, but for different weeds, the herbicides used are different, and appropriate weeding methods are also adopted, followed by the small series of pesticide nets . Let's get to know it.

First, choose the right herbicide

The herbicides that can be selected for annual grass weeds include Hecao Ling, Chlorella S-3, Sulfosin, Natto and Disan, Jingshen, and grass. The use of herbicides must be used before the seeds are germinated. Perennial grass weeds usually use non-selective herbicides, such as glyphosate, thatch, chlorsulfuron, grass, etc., which can be removed by smearing or directed spraying. For example, herbicide , dimethyltetrachloride, dicamba, etc., are mainly used on mature lawns in spring and autumn, and should be used when the soil is moist and there is no wind. Selective herbicides are generally used after weed emergence, often in combination of two to three.

Second, the use of correct weeding methods

Choosing the right herbicide, the right agent is the key to control. For example, the key to the control of weeds in the year is pre-emergence control, and there are few herbicides for post-emergence control, and special caution should be taken when spraying to prevent phytotoxicity against grass lawns. The perennial grass weeds are mainly vegetatively propagated, and it is difficult to control. During the period of vigorous growth of malignant weeds in summer, high-concentration herbicides with strong internal adsorption are applied. The application is suitable for weeds that prevent sporadic plants from being higher than turfgrass, and the application is effective for controlling the weeds that occur in slabs higher than turfgrass. For annual sedge weeds, it is advisable to apply a bud treatment agent such as Sapiron. Application period: planting lawn after 4-5 leaves of turfgrass; planting lawn should be built within 7 days; Chengping lawn before lawn returning to green period. The pre-emergence treatment of broad-leaved grass is generally carried out in combination with the control of grass weeds, such as spraying phosphorus, acetochlor, etc.; post-emergence treatment should be carried out in the 2-4 leaf stage to spray herbicides such as chlorpyrifos and metformin. .

In the case of lawn weed control, the new planting method of live broadcast should be used for the treatment of turf soil before the sowing, using glyphosate, gram and tracer and other herbicides, but it is necessary to maintain a safe interval of 3-5 days. After planting, planting the newly planted lawn, weeding can adopt soil treatment method and stem and leaf treatment method, and form a sealing layer in the soil after application, thereby killing weeds in the soil. From the sowing to the 4-leaf period, it is advisable to use a highly safe herbicide; for the live turf after the 5-leaf stage, there are many herbicides to choose from.

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