我所于１９８８年种植的８０多亩芒果园，芒果树经过多年的生长，树冠不断向外扩张，根系与枝叶之间的距离加大，树体消耗加大，致使产量下降，又由于郁闭度大，病虫害较严重，果实商品性较差，为此，对密植试验部分（４×１．５米），通过间伐来解决，对疏植（４×３米）... I was in 1988, planted more than 80 acres of mango orchards, mango trees after years of growth, the crown continued to expand outward, the distance between the root and foliage increased, tree consumption increased, resulting in decreased production, but also due to canopy Degree of large, pests and diseases are more serious, poor commercial fruit, therefore, the part of the dense planting test (4 × 1.5 m), through the thinning to solve, the thinning (4 × 3 m) ...