A PRELIMINARY REPORT ON THE STUDY OF THE EFFECT OF MULCHING ON THE ECOLOGICAL ENVIRONMENT OF SOIL IN LONGAN ORCHARDS

J.J. Xue, H.J. Gong, J.C. Pan , X. Sun
Ten-year-old ‘Chuliang’ longans were used to study the effects of different mulching materials on soil temperature, moisture, organic matter and pH in longan orchards. There were 5 treatments; T1: soil surface under the tree canopy was covered with a piece of black plastic film; T2: soil surface under the tree canopy was mulched with corn (Zea mays Linn.) straw; T3: area under the tree canopy was planted with white clover (Trifolium repens Linn.); T4: soil surface under the tree canopy was mulched with fresh cow dung inoculated with 125 earthworms per m3; T5: control (CK), soil surface under the tree canopy was kept clean all year round. Five months after the treatment, temperature in the soil of 0-20 cm depth at noon was recorded in a sequence of 10 days every month, the water capacity in the soil of 0-20 cm depth was recorded every 30 days; the organic matter in soil of 0-20 cm and 20-40 cm and the pH of soil at 0-20 cm depth were estimated every 60 days. The results indicated that soil moisture under T2 and T4 treatments were higher than in the other treatments (18.48-22.50 and 15.73-19.36%, respectively), while, the temperature in the soil at 0-20 cm depth at noon of T2 and T4 treatments in the hot season were lower than in the other treatments (23.11 and 23.95°C, respectively), and higher than in the other treatments in the cold season (16.96 and 16.25°C, respectively). The content of organic matter in T2 treatment was the highest (25.87 g kg-1), followed by T4, T3, T5 and T1 treatments. There was some degree of effects of different treatments on the soil pH, but there was no marked difference in pH for the same treatment during the course of the experiment, which ranged from 5.48 to 5.82 for T1, 5.31 to 6.08 for T2, 5.51 to 5.91 for T3, 5.40 to 5.95 for T4 and 5.50 to 6.22 for CK.
Xue, J.J., Gong, H.J., Pan , J.C. and Sun, X. (2014). A PRELIMINARY REPORT ON THE STUDY OF THE EFFECT OF MULCHING ON THE ECOLOGICAL ENVIRONMENT OF SOIL IN LONGAN ORCHARDS. Acta Hortic. 1029, 225-232
DOI: 10.17660/ActaHortic.2014.1029.26
https://doi.org/10.17660/ActaHortic.2014.1029.26
mulching, soil moisture, organic matter, pH
English

Acta Horticulturae