本文主要研究内容
作者（2019）在《Investigation of Tree Structure Parameters of High-quality and High-yielding Y-shaped Pear Orchards》一文中研究指出：In order to study reasonable tree structure parameters of Y-shaped pear orchards in natural conditions and at management technical level of Tai’an area, the tree structure and population structure of high-quality and high-yielding Y-shaped pear orchards were investigated. The results showed that when the yield of Y-shaped ’Oshu’ was 2 550 kg/667 m~2 in the early fully fruiting period, the quantity of the branches per 667 m~2 was about 54 000, and the number of short branches was the largest, accounting for 80.1% of total number of branches, followed by middle branches, long branches and developmental branches. As the yield of Y-shaped ’Qiuyue’ was 2 875 kg/667 m~2 in the early fully fruiting period, the quantity of the branches per 667 m~2 was 51 000, and the number of short branches was the largest, accounting for 75.6% of total number of branches, followed by middle branches, long branches and developmental branches. When the yield of Y-shaped ’Niitaka’ was 3 000 kg/667 m~2 in the early fully fruiting period, the quantity of the branches per 667 m~2 was 43 000, and the number of short branches was the largest, accounting for 82.0% of total number of branches, followed by long branches, middle branches and developmental branches.
Abstract
In order to study reasonable tree structure parameters of Y-shaped pear orchards in natural conditions and at management technical level of Tai’an area, the tree structure and population structure of high-quality and high-yielding Y-shaped pear orchards were investigated. The results showed that when the yield of Y-shaped ’Oshu’ was 2 550 kg/667 m~2 in the early fully fruiting period, the quantity of the branches per 667 m~2 was about 54 000, and the number of short branches was the largest, accounting for 80.1% of total number of branches, followed by middle branches, long branches and developmental branches. As the yield of Y-shaped ’Qiuyue’ was 2 875 kg/667 m~2 in the early fully fruiting period, the quantity of the branches per 667 m~2 was 51 000, and the number of short branches was the largest, accounting for 75.6% of total number of branches, followed by middle branches, long branches and developmental branches. When the yield of Y-shaped ’Niitaka’ was 3 000 kg/667 m~2 in the early fully fruiting period, the quantity of the branches per 667 m~2 was 43 000, and the number of short branches was the largest, accounting for 82.0% of total number of branches, followed by long branches, middle branches and developmental branches.
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