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以30个鲜食甜玉米品种为试材,研究果穗不同计产方法(第1果穗计产、所有果穗计产和商品果穗计产)对产量评价的影响。结果表明,3种计产结果在甜玉米不同品种间存在极显著差异,第1穗净果穗计产结果比商品穗产量高0～35.78%(除个别品种外);所有净穗计入产量结果比商品穗产量高0.08%～35.78%,且各百分率在不同品种间存在差异,以商品果穗计产比较科学。商品果穗标准为非霉变果穗,除去苞叶、花丝、穗柄、虫咬、损伤、秃尖及秃基部分的完好净穗有效长度至少不短于10cm的果穗。
Thirty sweet corn varieties were used as test materials to study the effects of different ear counting methods (yield earning 1, total yield earning and commodity yield earning) on yield evaluation. The results showed that there were extremely significant differences among the three varieties of sweet corn. The results of net ear production on the first ear were 0 ~ 35.78% higher than the yield of the commodity (except for some varieties); all the net ears were included in the yield result Spike yield is 0.08% to 35.78% higher than that of commercial products, and the percentages are different among different breeds. Commodity ear standard non-mildew ear, remove bracts, filaments, ear handle, insect bites, damage, bald tip and bald part of the intact net ear effective length of at least not less than 10cm ear.