桔园改土春季、夏季、秋季都可进行,而秋季进行桔园改土是最佳时期。这是因为秋季气温尚高,桔树地上部分生长比较缓慢,开始积累养分;根系生长也比较旺盛,伤根后易愈合,而且改土可切断一些细小根,能起到修剪根系、促发新根的作用。 Orange Garden Soil spring, summer, autumn can be carried out, and autumn orange land improvement is the best time. This is because the temperature is still high in autumn, orange tree parts of the ground to grow more slowly, began to accumulate nutrients; root growth is relatively strong, easy to heal after the root injury, and soil can cut off some small roots, can play the root prunes, promote new Root role.