论文部分内容阅读
【目的】了解2010年12月中下旬～2011年1月上旬严重霜冻和长时间低温对广西荔枝、龙眼生产的影响情况。【方法】采用面上调研、数据收集和实地调查相结合的方法,按荔枝、龙眼冻害分级标准对广西北缘产区藤县、桂平、平南、武宣和象州等县(市)荔枝、龙眼的冻害情况进行系统调查。【结果】被调查的5个县(市)荔枝、龙眼总受灾面积为13358ha,约占总面积的30%,其中象州、武宣和藤县受灾最重,冻害面积分别为670、1667和2887ha,分别占种植面积的100%、100%和67%,末次梢受害率达79.07%～100.00%;其次是平南和桂平,冻害面积分别为3467和4667ha,分别占种植面积的22%和20%,末次梢受害率达76.45%～99.62%。冻害特点为荔枝比龙眼受冻程度重,低洼果园比高坡果园受冻程度重。【建议】抓好受灾果园管理,适时适量供水,及时对树盘松土、覆盖,勤施薄施水肥,并根据不同冻害程度进行分级护理,以及加强受冻植株病虫害防治,争取最大限度减少灾害造成的损失。
【Objective】 To understand the influence of severe frost and prolonged low temperature on the production of litchi and longan in Guangxi from mid-December to late January, 【Method】 By using the methods of surface survey, data collection and field survey, the author studied the litchi, litchi and limestone in Tengxian, Guiping, Pingnan, Wuxuan and Xiangzhou counties in the northern margin of Guangxi by the grading standards of lychee and longan frost damage, Longan frost damage situation to conduct a systematic investigation. 【Result】 The total area affected by the longan in the 5 counties (cities) was 13358 ha, accounting for about 30% of the total area. Among them, Xiangzhou, Wuxuan and Tengxian hardest hit the areas of 670, 1667 and 2887ha respectively , Accounting for 100%, 100% and 67% of the acreage respectively, and the rate of the damage of the last shoot reached 79.07% -100.00%; followed by Pingnan and Guiping, with the frost damage areas of 3467 and 4667ha respectively, accounting for 22% and 20% of the acreage respectively %, The damage rate of the last shot reached 76.45% ~ 99.62%. Frost damage characteristics of lychee than longan frozen degree of heavy, low-lying orchards than the high slope orchard heavy degree of freezing. 【Suggestion】 Pay close attention to the management of the affected orchards, timely and appropriate water supply, promptly apply water and fertilizer to loosen, cover and diligently apply tree stalks and grading nursing according to the degree of frost damage, and strengthen prevention and control of pests and diseases of frozen plants, and strive to minimize disasters Caused by the loss.