In the growing period, K fertilizer deficiency can affect the yield too.

尤其是坐果至采收期间，钾亏缺的影响显著提高。

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It is serious soil arid in Karst areas because of leaking of water from the rock. Deficiency of water and fertilizer, it has influence on the production of the fruit tree.

岩溶地区由于岩石漏水，造成土壤干旱严重，致使农作物经常缺水缺肥，影响果树的生产。

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This paper introduced the effect of correcting iron deficiency disease on the peach trees with the methed of controlled the release iron fertilizer to the roots.

本文介绍了袋装控释铁肥压根法矫治桃树缺铁黄叶病的效果。

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