关键词: 柑桔, 高接换种, 树体指标, 柑桔类果树, 株型, 产量

Abstract: This experiment showed that the bud number of the top grafting, the diameter of the canopy, the leaf area of a single tree, the number of tip shoots and the diameter of the middle-piece-stock significantly influenced the early yield of the top-grafting-exchanging trees. The more bud number of top-grafting, the more number of tip shoots and the faster renewal of the canopy. The number also benefited the early fruiting and high yield. But it made the dense canopy. The cut diameter of grafting branches had a positive correlation with the length and diameter of shoots. If the site of the grafting was rised the numbers of shoots would increase and the growth amount of the single shoot decrease. There fore the appropriate budding numbers were 0.8-1.3 for each centimeter of the bole diameter. The indeses of the fruiting trees were:2 meters of the canopy diameter, 10 square meters of leaf area for single tree and 500-100 tip shoots of each square meter canopy.

Key words: CITURS, TOP-GRAFTING-EXCHANGING XARIETY, INDEX OF TREES, CITRUS-RETICULATA TREES, PLANT TYPES, YIELD