| Effects of intercropping systems of trees with soybean on soil physicochemical properties in juvenile plantations |
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| 摘 要： |
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| 关 键 词： | 林豆复合生态系统 土壤养分含量 土壤理化性质 落叶松-大豆复合生态系统 水曲柳 |
| 文章编号： | 1007-662X（2006）03-0226-05 |
| 收稿时间： | 2005-12-28 |
| 修稿时间： | 2006-03-16 |
Effects of intercropping systems of trees with soybean on soil physicochemical properties in juvenile plantations |
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| Authors: | A-nan Fan Xiang-wei Chen Zhi-min Li |
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| Institution: | (1) Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, P. R. China;(2) Graduated School, Chinese Academic of Sciences, Beijing, 100039, P. R. China;(3) College of Forestry, Northeast Forestry University, Harbin, 150040, P. R. China;(4) Forestry Bureau of Kazuo in Liaoning Province, Chaoyang, 122300, P. R. China |
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| Abstract: | The intercropping system of tree with soybean in juvenile plantations, as a short-term practice, was applied at Lao Shan Experimental
Station in Mao’er Shan Forest of Northeast Forestry University, Harbin, China. The larch (Larix gmelinii)/soybean (Glycine max.) and ash (Fraxinus mandshurica) intercropping systems were studied in the field to assess the effects of the intercropping on soil physicochemical properties.
The results showed that soil physical properties were improved after soybean intercropping with larch and ash in one growing
season. The soil bulk density in larch/soybean and ash/soybean systems was 1.112 g·cm−3 and 1.058 g·cm−3, respectively, which was lower than that in the pure larch or ash plantation without intercropping. The total soil porosity
also increased after intercropping. The organic matter amount in larch/soybean system was 1.77 times higher than that in the
pure larch plantation, and it was 1.09 times higher in ash/soybean system than that in the pure ash plantation. Contents of
total nitrogen and hydrolyzable nitrogen in larch/soybean system were 4.2% and 53.0% higher than those in the pure larch stand.
Total nitrogen and hydrolyzable nitrogen contents in ash/soybean system were 75.5% and 3.3% higher than those in the pure
ash plantation. Total phosphorus content decreased after intercropping, while change of available phosphorus showed an increasing
trend. Total potassium and available potassium contents in the larch/soybean system were 0.6% and 17.5% higher than those
in the pure larch stand. Total potassium and available potassium contents in the ash/soybean system were 56.4% and 21.8% higher
than those in the pure ash plantation.
Biography: FAN A-nan (1972–), female, Ph. Doctor in Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, P. R.
China. |
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| Keywords: | Intercropping systems Soil nutrient content Soil physicochemical properties larch/soybean intercropping system ash/soybean intercropping system |
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