以鲜食型糯玉米香白糯为材料，采用小区试验研究了钾肥对秋播鲜食糯籽粒建成及品质形成的影响。结果表明：⑴施用钾肥可使鲜食糯玉米籽粒的鲜重、干重、体积分别提高0.158g/(100粒·d)、0.136g /(100粒·d)、0.130cm3/(100粒·d)速度生长，而籽粒含水率以高于对照0.22个百分点速度脱水。⑵钾肥可明显提高鲜食糯玉米籽粒的赖氨酸、粗蛋白、游离氨基酸、可溶性蛋白、脂肪及淀粉含量。⑶钾肥区籽粒的赖氨酸、粗蛋白含量均在授粉14d出现峰值后缓慢下降；籽粒的游离氨基酸、可溶性蛋白含量在授粉后14d出现峰值后迅速下降，至授粉后22d，下降速度放慢；籽粒的脂肪、淀粉含量在授粉10d后即呈上升趋势，至授粉后22d，上升趋势放慢。⑷秋播鲜食糯玉米适宜采收期以授粉后22~26d为宜。

The paper studied the effects of potassium fertilizer on the seed formation and quality of Zea mays Sinensis. The material was “xiangbainuo”, a kind of Zea mays Sinensis, sowed in autumn and the experience was designed to do plot test. The results showed: (1) The fresh weight, the dry weight and the volume of seed were all raised than control for 0.158 g/100seed/d, 0.136 g/100seed/d and 0.130 cm3/100seed/d, respectively, while the seed water content was more quickly declined by 0.22%; (2) Potassium fertilizer can help gaining higher the content of lysine, crude protein, free amino acid , soluble protein, Fat and Starch . ⑶14d after being pollinated, lysine and crude protein reached the max volume, then began to decline slowly; the free amino acid and the soluble protein also reached the highest, 14d after being pollinated, but then declined quickly, until the 22 day; Fat and Starch were steadily raised until the 22 day after being pollinated, then slow down. (3) The optimum harvest date of Zea mays Sinensis was the 22-26 day after being pollinated, which sowedin autumn.