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农业生产中,根据作物生长情况,在最佳时机合理施肥,及时补充作物缺乏的养分,非常重要。而通过果叶等辨识作物缺肥症就是一种简单实用的方法。缺氮叶色浅绿、基部叶片(老叶)变黄,逐渐向上发展,干燥时呈褐色。植株矮小,分枝(分蘖)少,出现早衰现象。若果树缺氮则表现为果小、果少
In agricultural production, according to the growth of crops, it is very important to rationally fertilize at the best time and replenish the crops with lack of nutrients in time. However, it is a simple and practical method to identify crop deficiencies by detecting fruit leaves. The nitrogen-deficient leaf color is light green, the base leaf (old leaf) turns yellow, and gradually develops upward, browning when dry. Plant short, branching (tillering) less premature aging phenomenon. If the tree nitrogen deficiency is manifested as small fruit, fruit less