No trace of grass, good vegetable yield

Gram-free is a herbicide that can kill the monocotyledonous and dicotyledonous weeds in the vegetable field. It is usually applied before the vegetables are harvested, and the vegetable residues and weeds are killed together. The author has chosen the test of lettuce growing vigorously. After the lettuce is harvested, it is sprayed in a timely manner with 150 ml/mu and 200 ml/mu, and compared with manual weeding and no weeding, through a two-month field trial and Observations showed that the gram-free traces had obvious control effects on the weeds in the leeks, and the yields of the sorghum vegetables were significant. The effects were as follows:

1. No trace of gram has a good grass control effect on the back leeks: on the 7th, 14th, 21st and 28th day after the investigation, the control effect of the spray gram without trace 150ml/mu on weeds is 97.6 %, 62·4%, 27.8%, 23.1%, the control effect of spray gram without trace 200 ml/mu on weeds was 96.8%, 74.5%, 33.3%, 23· 9%. There is no significant difference between the effect of manual weeding, but the difference with the absence of weeding. The non-weeding community has been overgrown, indicating that the trace of weeds has a significant control effect on the weeds in the back amaranth.

2. The effect of gram-free on the yield increase of the sorghum vegetables is obvious: the average plot yield of the vegetables with a spray of 150 ml/mu is 13.19 kg, which is 20.8% higher than the control; the spray gram has no trace of 200 ml/mu. The average plot yield was 13.60 kg, which was 24.5% higher than the control; the average yield of artificial weeding plot was 13.42 kg, which was 22.9% higher than the control; the average plot yield without weeding was 10.92 kg. Although there was no significant difference in plant height and leaf thickness between the treated lettuces, the fresh weight per plant of the lettuce in the treatment area was significantly heavier than that in the non-weeding area, which showed that the lettuce in the non-herbiferous area grew thinner and thinner, so the yield of lettuce in the non-weeding area decreased. .

3, after the treatment without traces, there is no side effect on the growth of the sorghum vegetables, and no phytotoxicity occurs.

Application method: After the vegetables are harvested, spray with 150 ml/mu, the weeds and vegetable residues can be killed together, and then the sorghum vegetables are planted. Gram-free herbicides, the weed blades will die after a few hours of application, and the soil does not conduct osmotic residues. Therefore, after 1 day of spraying, the seedlings can be transplanted and transplanted.

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