Application of disulfide compound in crop protection
A technology of disulfides and compounds, applied in the field of chemistry
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Embodiment 1
[0032] Example 1 Divinyl disulfide rapeseed yield increase test
[0033] Divinyl disulfide was formulated into 80% emulsion according to the general method of pesticide preparation.
[0034] The one-acre eight-fen rape field in Tiandong Village, Dongjia Town, Fengcheng City, Jiangxi Province, which had been severely frozen was used as the experimental field, and the four-mu rape field which was also severely frozen was used as the control. On January 18th, February 8th, and February 28th, 2008, the test field was sprayed three times altogether, and each mu was mixed with 15 kilograms of water with 20 ml of the prepared water emulsion; the control field did not spray the diallyl disulfide emulsion.
[0035] Result: The rapeseed after spraying did not die of disease due to freezing damage, and the seeds were plump. The total yield of rapeseed in the experimental field reached 80 catties, while the total output of four mu of rapeseed in the control field was less than 100 cattie...
Embodiment 2
[0036] Example 2 Effects of dimethyl disulfide on growth regulation and quality improvement of spinach and green vegetables
[0037] Dimethyl disulfide was formulated into a 10% concentrated emulsion according to the general method of pesticide preparations.
[0038] The green vegetable and spinach fields in Luolai Shuijia, Zhangfang Xitou Natural Village, Fushan Township, Nanchang County, Jiangxi Province, were sprayed with 100ml of the prepared water emulsion mixed with 15kg of water every 20 days in 2007. The sprayed spinach and green vegetables have thicker leaves, sweet and tender taste, and are on the market 10 days in advance. The spinach and green vegetables of Luo Laishui's family are sold as brand names in the local vegetable market.
Embodiment 3
[0039] Example 3 Soil disinfection and crop growth promotion effect of dibutyl disulfide
[0040] Dibutyl disulfide was formulated into a 30% emulsion according to the general method of pesticide preparations.
[0041] Root rot has occurred in vegetable greenhouses where Henan Academy of Agricultural Sciences has grown cucumbers for many years. At the beginning of June 2007, the experimental area used 80ml of the prepared microemulsion mixed with 15 kg of water to irrigate the roots, irrigated 100-200 ml per plant, and then used the prepared microemulsion of 25 ml mixed with 15 kg of water to spray the leaves once. Root irrigation and spraying will not be carried out in the blank area.
[0042] Results: Until July 4, 2007, the root rot in the experimental area was suppressed, no new diseased plants occurred, and the leaves of cucumbers were tender green; new diseased plants continued to occur in the blank area. The fruit setting in the experimental area was obviously more th...
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