我省丘陵地区属亚热带气候,不论春、秋季都可栽植柑桔。但根据我所生产实践证明,定植时期仍以秋季为好。因秋季气温高,湿度大,柑桔根系伤口愈合快;新根容易生长,幼树易转旺,次年春季可萌发健壮春梢,在春梢上抽发健壮的二次梢,加快构成树冠骨架,给适龄结果创造有利条件。一般在10月,抓紧秋雨前栽植最适宜。如在春季温度回升时定植,只要苗木根部土团不散、灌溉条件好,栽后切实加强管理,成活率也较高。冬季气温、地温都低,且常干旱,土壤水分缺乏,苗木定植后伤口不易愈合,新根不易发生;且地上部枝叶的蒸腾作用和干旱风影响而萎蔫、死亡。所以冬季定植的苗木不但成活率低,生长也不良,容易形成“小老树”,达不到早结果、丰产的目的。 Hilly region in my province is a subtropical climate, both spring and autumn can be planted citrus. However, according to the practice that I have produced, the autumn planting is still good. Due to high temperature in autumn and high humidity, root healing of citrus root is quick; new root is easy to grow, young tree is easy to turn prosperous, next spring can germinate strong spring shoots, draw strong second shoots on spring shoots, accelerate the formation of canopy Skeleton, to create favorable conditions for age-appropriate results. Generally in October, seize the most appropriate autumn planting. As in the spring when the temperature rose colonization, as long as the roots of the soil does not loose soil, irrigation conditions are good, effectively strengthen management after planting, survival rate is higher. Winter temperatures, low ground temperatures, and often drought, lack of soil moisture, wounds after planting seedlings difficult to heal, the new root is not easy to occur; and shoots above the branches of the transpiration and drought affected by wilting and death. Therefore, the seedlings planted in winter not only low survival rate, poor growth, easy to form a “small tree”, failing to achieve early results, the purpose of high yield.