By using randomized-block design of two factors, the effects of Daerfeng fertilizer and spraying date on maize yeild and other economic characteristics were studied.
采用随机区组设计方法，研究了达尔丰喷施时期和喷施量对玉米产量和其它经济性状的影响。
By using randomized-block design of two factors, the effects of Daerfeng fertilizer and spraying date on maize yeild and other economic characteristics were studied.
采用随机区组设计方法，研究了达尔丰喷施时期和喷施量对玉米产量和其它经济性状的影响。
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