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1997年美国引进抗草苷膦除草剂棉 ,大约种植 30万公顷 ,1 998年超过 1 0 0万公顷 ,1 999年的种植面积仍在增加。当按标签说明在土壤表面喷洒草苷膦时 ,抗除草剂棉的营养生长正常 ,但是花组织的抗性较低 ,在结铃期若过量施用 ,花粉不能发育 ,因此出苗后必须小心地喷洒到植株基部
In 1997, the United States introduced an anti-glyphosate herbicide cotton crop, planting about 300,000 hectares and over 10 million hectares in 1998, with an increase in the area planted in 1999. Herbicide-resistant cotton grows normally when applied with glyphosate on the soil surface as indicated by the label, but has low resistance to flower tissue. If applied overexploited during the boll stage, pollen should not develop and must be carefully sprayed after emergence To the plant base