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作物葉面施肥應該掌握的10項技術要點!

時間:2020-03-28 瀏覽:2251次
內容介紹

依據植株在各個生長時期所需要養分的情況選用相應的肥料,有針對性的補給。如苗期需以氮肥為主,確保植株茁壯成長;中期需要補磷肥,后期適當補充鉀肥,有利于作物獲得高產。對于高產田和施用有機肥較少的田塊,噴施多元微肥有利于平衡施肥,收到高產、優質的效果。

因為多數果樹屬深根性植物,在垂直方向上吸收根具有成層分布的特點,蘋果、梨等仁果類果樹根系的集中分布層一般為20~80cm土層,桃、杏、李、櫻桃等核果類為20~40cm土層。初果期樹5~30cm.土層為吸收根密集區,盛果期樹10~50cm土層為吸收根密集區,這就要求我們必須根據不同樹齡,把80%的肥料施在吸收根密集區。

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