The techniques of fertilizer application were improved, reasonable fertilizer usage contributed to crop yield and food quality significantly.
肥料应用水平有了明显提高。合理使用化肥，大大提高了农作物的产量，改善了作物品质。
The oncosis of papaya could he controlled effectively by reasonable application of B fertilizer and calcareousness.
合理施用B肥和石灰。可以有效防治番木瓜瘤肿病。
The oncosis of papaya could he controlled effectively by reasonable application of B fertilizer and calcareousness.
合理施用B肥和石灰。可以有效防治番木瓜瘤肿病。
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