| Analysis of certain problems in Prunus armeniaca×P. sibirica production in Baiyushan hilly area |
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| DOI：10.7606/j.issn.1000-7601.2007.04.11 |
| Key Words: P. armeniaca×P. sibirica frost variety orchard site fruit -setting position fruiting branch |
| Author Name | Affiliation | | BAI Gang-shuan | Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China
Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China | | DU She-ni | Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China
Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China | | LI Zhi-xi | Yulin College, Yulin, Shaanxi 719000, China |
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| Abstract: |
| Baiyushan hilly area of northern Shaanxi was a large base of almond-apricot that is dominated by Prunus armeniaca×P. sibirica, but P. armeniaca.×P.sibirica trees in this region only blossom without fruit, having no output value. Investigation and observation have been taken for many years and the causes of the problem have been unveiled. It has been found out that P. armeniaca×P. sibirica florescence and setting fruit phase encountered strong and frequent frost, which could easily hurt the flower and young fruit. At the same time, Longwangmao, the dominating variety, grew slowly and its florescence was shorter and earlier than other varieties, and resisted frost weakly. Most P. armeniaca×P. sibirica orchards were built in southern slope land, where the fruit trees' florescence was shorter and earlier than in other slope land, very easy to encounter frost. Most trees were trained as open center shape, fruit-setting positions were relatively low，and most fruiting branches were spur fruiting and short fruiting ones, so the florescence was shorter, earlier and more centralized, making it different to avoid the frost. Some suggestions are put forward in order to resolve these problems, including selecting and breeding new varieties with late florescence and anti-frost, strengthening cultivation management. At the same time, a larger base of almond-apricot dominated by P.armeniaca var. ansu should be established. |
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