| Effects of different grasses between rows of apple trees on soil characteristics of 1-year-old orchard |
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| DOI：10.7606/j.issn.1000-7601.2012.04.26 |
| Key Words: grass-grown orchard apple tree grass species soil fertility |
| Author Name | Affiliation | | KOU Jiancun | College of Animal Science and Technology, Northwest A ＆ F University, Yangling, Shaanxi 712100, China | | YANG Wenquan | College of Life Science, Northwest A ＆ F University, Yangling, Shaanxi 712100, China | | CHENG Guoting | College of Horticulture, Northwest A ＆ F University, Yangling, Shaanxi 712100, China | | HAN Mingyu | College of Horticulture, Northwest A ＆ F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| An experiment was conducted to study the effect of the orchard-grown grasses，planted between the the rows of apple tree in the spring of the 1-year-old apple orchard, on soil temperature, soil water content, pH, organic matter, nitrogen (N) content, phosphorus (P) content, kalium (K) content in October. The clean soil was taken as the control. The results showed that there was a decrease of soil temperature and its daily variance in summer. And soil pH decreased while soil water content, available N and P, total N and P, and organic matter increased. However, available and total K did not change significantly with the exception of available K of soil Trifolium pratense grew in. Furthermore, the effects of grasses on soil fertility varied from its depths. The effect on 0～10 cm soil layer was consitent with that on 10～20 cm for Dichondra repens on soil N and P, Cynodon dactylon and Festuca rubra on organic matter. The effect on 0～10 cm was more than 10～20 cm for Lolium perenne, Cynodon dactylon, Festuca rubra on soil available N, total N and P, and Trifolium pratense, Festuca rubra on organic matter. But, it reversed for Lolium perenne, Festuca arundinacea, Festuca rubra, Trifolium pretense, Trifolium repens on available P, Trifolium pretense, Festuca arundinacea on available and total N, Dichondra repens, Lolium perenne, Trifolium repens on the soil organic matter. And for Trifolium repens, the increase of the 10～20 cm available N was more than 0～10 cm, but total N reversed. At the same time, different grasses had various effects on soil. Dichondra repens was most efficient to improve soil fertility, Trifolium repens and Trifolium pretense followed while Cynodon dactylon and Festuca arundinacea was the lest. In conclusion, the orchard-grown grasses can improve soil fertility, and the species of grass was the key factor for the efficiency. |
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