《Table 1 Soil nutrient status of the test orchard》

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《Effect of Inter Stock ‘Zhong ai 1hao'on the Structure of Spindle-shaped 'Huangguan' Pear Trees》

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In 2017，investigations were conducted at the Jinniushan Experimental Demonstration Base of (Shandong Institute of Fruit Research.The soil nutrient status of pear orchard was shown in Table 1，and the orchard was under routine management.The 4-year-old‘Huangguan’pear trees were selected from the pear orchard in the base for the investigation and study，and all were of spindle-shaped tree bodies.The grafting stocks were all Pyrus betulaefolia.The planting spacing for dwarf‘Huangguan’pear trees was 0.75 m×3 m.‘Zhong ai 1 hao’was used as the inter stocks with the stock length of 20-25 cm.the planting spacing for vigorous stocks of‘Huanguan’pear trees was 1 m×3 m.The test pear orchard had moderate management level.In2017，the percent rate of high quality fruit was over 90%for both the dwarfing stocks and vigorous stocks of‘Huangguan’pear.The trees with similar loads and tree shapes were selected for the investigation，and there were 5 plants in a plot with 3 repetitions.