CAJ | 학술논문

在大田试验条件下，研究施钾量对杂交棉金102、湘杂棉8号、泗阳328的产量和品质及钾肥利用效率的影响。结果表明：施钾（K2O）量为135～270 kg/hm2，可增加皮棉产量39.13%～57.48%，达极显著水平；单株成铃数、单铃重、衣分分别提高14.24%～40.29%、3.59%～15.51%、0.16%～4.89%；纤维长度、比强度随施钾量增加而增加，对麦克隆值无显著影响。施钾量由135 kg/hm2增加至270 kg/hm2时，钾肥偏生产力（PFPk）降低45.93%～48.01%，钾肥农学效率（AEk）降低37.0%～42.9%。金102的钾肥农学效率（AEk）最高，施钾增产效果最好；泗阳328耐低钾胁迫能力最强，不施钾肥时，皮棉产量分别较湘杂棉8号、金102高5.54%、11.19%。
재대전시험조건하，연구시갑량대잡교면금102、상잡면8호、사양328적산량화품질급갑비이용효솔적영향。결과표명：시갑（K2O）량위135～270 kg/hm2，가증가피면산량39.13%～57.48%，체겁현저수평；단주성령수、단령중、의분분별제고14.24%～40.29%、3.59%～15.51%、0.16%～4.89%；섬유장도、비강도수시갑량증가이증가，대맥극륭치무현저영향。시갑량유135 kg/hm2증가지270 kg/hm2시，갑비편생산력（PFPk）강저45.93%～48.01%，갑비농학효솔（AEk）강저37.0%～42.9%。금102적갑비농학효솔（AEk）최고，시갑증산효과최호；사양328내저갑협박능력최강，불시갑비시，피면산량분별교상잡면8호、금102고5.54%、11.19%。
The effects of potassium (K) application rates on the yield, fiber quality and K fertilizer use efficiency of three hybrid cotton varieties (Jin102, Xiangzamian8, Siyang328) were studied in field experiment. Fertilizer rates of K2O 135 and 270 kg/hm2, representing 1x and 2x recommended K rates, were applied, no application of k fertilizer as the CK. The results show that the lint yield increased 39.13%-57.48%with potassium application, highly significantly. Al yield components of the three hy-brid cotton varieties increased with the increase of K application amounts. The bol number per plant, single bol weight and lint percentage were increased by 14.24%-40.29%, 3.59%-15.51% and 0.16%-4.89%, respectively, and the fiber length and specific strength also increased with the increasing K application amounts, showing no significant influence on Micronaire. When the K application amounts increased from 135 to 270 kg/hm2, the partial factor productivity (PFPk) reduced by 45.93%-48.01%, and the agronomic efficiency (AEk) reduced by 37.1%-42.9%. The PFPk and KE (K efficiency coefficients) of S328 were the highest among the three varieties, which also showed the strongest resistance to low potassium stress, and with no potassi-um fertilizer application (K0), the lint yield of S328 was 5.54% and 11.19% higher than that of X8 and J102. The AEk of J102 was the highest, and its reward of K fertilizer was the greatest among the three varieties.