风险和收益 是从长期看的，短期不一致可能发生的

股票的收益是一个随机变量,不是一个确定的数.即使拿期望来和名义利率确定的证券对比也没有什么意义.

normally, we identify the governemnt bond is a type of risk-free asset and the YTM of bond shoud be stable in the long-run. The risk of shares are identify by the RRR(required rate of return) and also shares are risk asset. The risk of share normally go up and down very much.

trandition thoery display--" higher risk and higher return"..... But normal shares have better liquidity in the captial market. In the short-run, maybe it will happen the situiation that you mentioned before. In the long-run, the return of normal shares are much more risk than 10-years government bond.

By the way, more longer maturity bonds are more risky, because long-run bonds are more senstive about the change of interest rate. ( using duration to measure it)

i just say what my idea is, maybe it is not enough good.

"许多年份国库券的收益率要高于普通股,这是否与风险和收益正相关的论述保持一致?"

应该这样理解:

收益----长期平均收益率.

风险----收益的稳定性. 一般用收益的标准差表示.

股票收益有时低于国库券, 有时高于国库券. 它的风险大. 长期平均收益率是高于国库券.

国库券收益稳定, 长期平均收益率就低于股票.