[Objective] The paper was to explore a kind of Zn preparation suitable for injection on trees with fast,efficient and safe cure effect on physiological disease of Zn deficiency.[Method] Taking three years old apple,pear,peach and grape trees as the materials,the author studied the absorption condition of these trees to six kinds of zinc substances and their security.The sealed curative effects of the injected zinc substance solution which was harmful and could be absorbed steadily by the fruit trees on rose...
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