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Wysłany: Śro 6:08, 16 Lut 2011
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Yunnan planthoppers of the Features and climate factors
Agricultural Station, Yunnan Dongchuan 654 100) Abstract: 3 years oxyfluorfen test results show that: the drug is an effective, low toxicity, broad-spectrum herbicide speed, wide application and can also Control in a variety of single and twin leaf weed herbicides, generally the first drug to achieve the effect of the whole season without grass. Keywords: oxyfluorfen; weeds; crops; application oxyfluorfen flunitrazepam, also known as ethyl, fruit Seoul, mowing ether, is a tag-based herbicide, in the case of light to play to kill Weeds. Mainly through the coleoptile, mesocotyl into the plants, the roots absorb less upward transport through the roots into the leaves. Early application of pre-and postemergence seedling the best that can Control in broad-leaved weeds,
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, sedges and weeds, the weed is propagated by seed variety has good control effect, only the inhibitory effect on perennial weeds. mg / L), in acetone, ethanol, xylene solubility of greater than 50% in isopropyl and acetone, ethylene dichloride in the solubility of greater than 40%, easy to photolysis. Preparations from the active ingredient oxyfluorfen, surfactants, solvents, flash point and water composition. The appearance of black opaque liquid, specific gravity 1.04 ~ 1.06, boiling point 139 ~ 156 ��, 25 �� when the vapor pressure 666.5Pa, flammable. At a temperature of 50 �� for 1 year storage,
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, the active ingredient is not decomposed. 1, 2, physical and chemical properties for the active ingredient content of the original drug crops, 70% to 80%, yellow to reddish brown, semi-solid, specific gravity 1.49 (25 ��), the boiling point of 250 ~ 300oC. 70% of the original drug melting point 59 ~ 78 ��, 80% of the original drug melting point of 68 ~ 83 ��, flash point is greater than 93.33 �� (closed), 25 ~ C when the vapor pressure of 266.7X10Pa, at room temperature almost insoluble in water (25 �� when the solubility in water of less than 1 Received Date :2009 -06-19 rice,
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, dryland crops, garlic, orchard. 3 Control objects paddy: barnyard grass, shaped sedge, Monochoria grass,
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, street serving, spiraling food, cattle blankets, sunshine Fimbristylis, broken Misha grass, Alisma, the three core ditch chickweed,
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, half with water amaranth, daughter and other son. on Spirogyra, cress, Ying Lin, Sagittaria pygmaea , pointed flower petals have better efficacy. glebe: nightshade, cocklebur, pigweed, -. BU I - +-t one by one one by one - BU a - + eleven-4 --- at-+ one by one - one by one -. _ a + - + one by one - +. A - + A - 4 + - 4 --- + eleven --+---- 4 - a -4-- control effect.
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