幼苗吸收试验表明,9个水稻品种幼苗整株根系对钾的吸收速率有极显著的差异,吸收速率最大的协优46与最小的秀水48相差4.1倍.水培试验和田间试验结果表明,在低钾条件下,协优46比汕优6号和秀水48的钾素利用效率大,这与钾在其体内再分布能力强有关.在低钾的土壤条件下,供试品种中以协优46的产量最高,施钾提高了三个品种的稻谷产量,稻米的碳水化合物含量、蛋白质含量和产量,但降低了稻米的可溶性糖含量,并且钾对不同品种的产量和品质的影响有一定的差异.施钾对稻米的直链淀粉含量没有明显的影响. The seedling absorption test showed that the root absorption rate of potassium in nine rice seedlings showed extremely significant difference, and the maximum absorption rate of Xieyou 46 was 4.1 times lower than that of the minimum Xiushui 48. The results of hydroponic culture and field experiments showed that in the Under low potassium conditions, the potassium use efficiency of Xieyou 46 was higher than that of Shanyou 6 and Xiushui 48, which was related to the strong redistribution of potassium in its body. Under low potassium soil conditions, 46 had the highest yield. Potassium application increased rice yield, carbohydrate content, protein content and yield of three varieties, but decreased soluble sugar content of rice, and potassium had some influence on the yield and quality of different varieties Differences. Application of potassium had no obvious effect on the amylose content of rice.