May be not their desired effect, but why not consider another point of view: the process of paying it not a harvest.
也许并不是自己所预期的效果，但何不换个角度去思考：付出的过程何尝不是一种收获。
You can experiment with harvest dates and yields, but this takes many years to show any effect.
你可以进行收获种植的试验，但这需要很多年才会显现成效。
Two Japonica rice varieties-Dongyou9901 and Changlixiang-were studied to reveal the effect of different harvest date on rice grain taste meter value and RVA profile.
选用粳稻品种东优9901和长粒香，研究不同收获时期对稻米味度值与RVA谱特性的影响。
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