Too high or too low fertilization level doesn't benefit the increase biological yield, economic yield and amount of dry matter.

高肥和低肥均不利于单株生物产量、干物质积累总量和经济产量的增加，高肥的抑制作用更明显。

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Low level nitrogen fertilizer maked the yield of strawberry fruit to decline, but it maked the single fruit weigh to improve greatly, and improve the ratio of commodity fruit significantly.

低量氮肥处理虽然产量较低，但大大提高了单果重，明显增加了草莓果实的商品果率。

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The method can provide a crystal of the compound with a high purity and a high yield while the content of 2s isomer is kept at a low level.

通过本发明的方法，可以以高纯度且高收率得到该化合物的结晶，同时降低2s异构体的含量。

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