Results of spraying three plant growth regulators to large area of corn fields in 2004 and 2005 shows that the chemicals have different effects on agronomic characters of corn and on prevention from early frost injury.
2004-2005年利用3种玉米植物生长调节剂进行大田喷施试验,结果表明不同的制剂对玉米的农艺性状和避早霜害效果影响不同。
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