| The variation of soil nutrients of fruit tree defoliation in early stage and its effects on fruit quality |
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| DOI：10.7606/j.issn.1000-7601.2012.05.30 |
| Key Words: fruit quality content of fruit fruit density soil condition |
| Author Name | Affiliation | | LI Jianbo | Northwest A & F University, Yangling, Shaanxi 712100, China | | XU Hai | Northwest A & F University, Yangling, Shaanxi 712100, China | | WANG Yiquan | Northwest A & F University, Yangling, Shaanxi 712100, China | | SUN Lei | Northwest A & F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| In order to reveal soil conditions causing defoliation of fruit trees in the early stage and to analysis the technical problem causing defoliation of fruit trees, this study investigated different orchards, including the same tree ages, the same fruit tree varieties, defoliations and non-defoliations, and measured soil nutrients in the soil profiles and main quality indexes of apple. The result showed that soil organic matter content of orchard was obviously lower than that of farmland. In the surface layer of orchard soil, the organic matter content of defoliation orchard was higher than that of non-defoliation orchard, however, under 60 cm soil layers, it was the other way round. And the calcium carbonate content of non-defoliation orchard was a little higher than that of defoliation orchard. Available N content was degreased with increasing of soil layers, and over 35 cm soil layers, the content of available N was not obviously different between non-defoliation orchard and defoliation orchard. Fruit density: non-defoliation orchard＞defoliation orchard. Sugar content of fruit: non-defoliation orchard＞defoliation orchard, too. |
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