Film - covered can improve the dry matter to form and accumulate and the biological yield is increased by 43 percent.

覆膜促进干物质的形成和累积，生物产量提高43%。

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So the total grain yield is increased. The increasing population brings the large stress on cropland and grain resource.

河北省未来人口持续增长，对耕地和粮食资源产生很大压力；

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The experiment of irrigating reeds with rice straw pulping effluent shows that the reeds planted in barrel can grow healthily and the yield is increased.

通过稻草制浆造纸废水灌溉桶栽芦苇的试验，芦苇生长良好，增产效果显著。

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Apple at its current share price has a dividend of 2.3 percent If I am correct, which happens on occasion, and the dividend is increased 20 percent then Apple now has a yield of 2.76 percent or about the same as Coke.

FORBES: Apple: What's It Really Worth

Bond traders are showing signs of increased risk aversion as yield spreads have widened and debt is harder to finance for some companies.

FORBES: New Turbulence In Credit Markets

But the low yield achieved by Unilever and IBM is part of two further trends: the increased use of the bond markets by European companies and a new-found enthusiasm of investors for corporate debt.

ECONOMIST: Buttonwood: Money for nothing | The