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近几年来,郊区陆续引种柑桔,发展较快。目前大部分桔苗是从浙江、江苏等地引入的,但也有不少桔园开始自己嫁接繁育桔苗。上海是柑桔栽培的北缘地区,现已有数十万株桔苗分布于各桔园,因此做好桔苗的冬季防冻保暖工作极为重要。据调查,郊区各桔园在桔苗防冻上曾采用了多种多样的保暖措施,并取得了不同程度的效果。桔苗安全越冬是一项综合性的技术措施。首先要选择优良的耐寒品种,注意肥水管理,控制晚秋梢,防治病虫害,使苗木健壮,以提高桔树本身的抗冻能力。同时还必须采取有效的防冻措施,使桔苗安全越冬。就桔苗冬季保暖这一措施来看,通过调
In recent years, the suburbs have introduced citrus, rapid development. Most of the current Miao Miao is from Zhejiang, Jiangsu and other places introduced, but there are a lot of orange groves start their own breeding and breeding Miemiao. Shanghai is the northern margin of citrus cultivation. Now hundreds of thousands of orange shoots are distributed in each orange garden. Therefore, it is extremely important to make the winter frost and warmth work of orange shoots well. According to the survey, a variety of warmth measures have been adopted on the outskirts of the Orange Park in the antifreeze Miemiao, and achieved varying degrees of effect. Miao Miao safe winter is a comprehensive technical measures. First of all, to choose good hardy varieties, pay attention to fertilizer and water management, control late autumn shoots, pests and diseases control, seedlings robust, in order to improve the antifreeze ability of the orange tree itself. At the same time, effective antifreezing measures must also be taken to ensure that the Miao Miao is safe and overwintering. The orange seedlings in winter warm this measure, by adjusting