求翻译：研究分析了不同施钾处理下弱筋小麦生育期间植株地上部钾素积累特点及对产量和品质的影响。结果表明，在小麦生育期间，钾素在前期积累缓慢上升，中期达到高峰，后期又有所下降，不同施钾水平下对钾素积累又有所不同。小麦生育期间，K1、K2、K3，低、中、高不同施钾处理间小麦体内钾素积累没有明显区别，表现为K2>K1>K3。施k2O量为135kg/hm2处理水平对增产，对籽粒蛋白质含量和沉降值效果最好，与其他处理之间差异达显著水平。是什么意思？

Study on the analysis of the weak-gluten wheat under different potassium plant shoot during potassium accumulation characteristics and effects on yield and quality. Results showed that in wheat growing period, at the early stage of potassium accumulation has been creeping up, medium-term peak in late decline on potassium accumulation under different potassium level is different. During the wheat growth, K1, K2, K3, low, medium, high, between different potassium potassium accumulation in spring wheat with no apparent difference, expressed as K2>K1>K3. Effects of k2O of 135kg/hm2 treatment on yield, on grain protein content and sedimentation value works best, and other processing differences between reached significant levels.