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采用４个不同小麦品种，于６－７叶期公顷施２００ｍｇ／ｋｇ的ＭＥＴ７５０ｋｇ液，对其生物效应进行了研究。结果表明：各品种的株高下降，基部节间缩短，茎壁增厚，其效果显著，但对茎粗的影响不明显。在群体小的情况下，引起产量和品质的下降，这可能是由于ＭＥＴ在此期使用改变了麦株体内的激素平衡，致使分蘖增加，小穗增多，穗部性状变劣所致。不同品种间，喷药效应存在差异。
Four different wheat cultivars were used to study the biological effects of 200 mg / kg MET750 kg at 6-7 leaf hectares. The results showed that the plant height, the shortening of basal internodes and the thickening of stem wall were significant in all varieties, but the effect on stem diameter was not obvious. In the small population, the yield and quality decline may be caused by the use of MET during this period to change the hormonal balance in the wheat plant, leading to increased tillering, spikelets, and deterioration of ear traits. Different varieties, spray effects are different.