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1987年,我场从商丘订购了1吨稀土新品种(NL—3—②),在小麦孕穗期至开花期叶面喷洒。每公顷用量为600克。经12个生产队的1900公顷麦
In 1987, I ordered a ton of rare earth new varieties (NL-3-②) from Shangqiu, and sprayed it from the booting stage of wheat to the flowering foliage. The amount of 600 grams per hectare. 1900 hectares of wheat after 12 production teams