Dynamics of Soil N<span>H</span><sup>+</sup><sub style="margin-left:-10px;">4</sub>-N and N<span>O</span><sup>-</sup><sub style="margin-left:-4px;">3</sub>-N in Rubber Plantation in Wenchang, South China
- 1 Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences/Danzhou Investigation & Experiment Station of Tropical Crops, Ministry of Agriculture and Rural Affairs, Danzhou, China
- 2 Wenchang Rubber Research Institute of Hainan State Farms, Wenchang, China
- 3 Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences/Danzhou Investigation & Experiment Station of Tropical Crops, Ministry of Agriculture and Rural Affairs, Danzhou, China
- 4 Wenchang Rubber Research Institute of Hainan State Farms, Wenchang, China
- 5 Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences/Danzhou Investigation & Experiment Station of Tropical Crops, Ministry of Agriculture and Rural Affairs, Danzhou, China
- 6 Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences/Danzhou Investigation & Experiment Station of Tropical Crops, Ministry of Agriculture and Rural Affairs, Danzhou, China
Abstract
In this study, the dynamics of soil available nitrogen in rubber plantations was studied to provide a basis for the sustainable management of soil nutrients in rubber plantations. Soil samples were collected from 0 - 20 cm and 21 - 40 cm depth of rubber plantations in Wenchang area of Hainan Province to determine the soil ammonium nitrogen and nitrate nitrogen in March, June, September and December. The results showed that the total available nitrogen in the rubber plantation soil was mainly composed of nitrate nitrogen (>57%), and this nitrate nitrogen was always the absolute composition advantage in the total available nitrogen composition, and this composition advantage did not change with the change of soil depth. Nitrate and ammonium nitrogen in rubber plantation soil showed obvious seasonal variation characteristics in 0 - 20 cm soil layer and 21 - 40 cm soil depth. With the seasonal time change, the contents of soil nitrate and ammonium nitrogen increased first and then decreased. Summer and autumn were the most active periods of soil nitrate and ammonium nitrogen. There was a significant positive correlation between soil nitrate nitrogen content and ammonium nitrogen content (r = 0.6532**). Based on the correlat ion between soil ammonium nitrogen content and nitrate nitrogen content, the content of ammonium nitrogen in soil can be estimated according to the amount of soil nitrate nitrogen.
- Chapin III, F.S.H., Vitousel, P. and Clev, K.V.E. (1986) The Nature of Nutrient Limitation in Plant Communities. American Naturalist, 127, 148-158. https://doi.org/10.1086/284466
- Rashid, G.H. and Scheafer, R. (1988) Seasonal Variation in the Nitrogen Mineralization and Mineral Nitrogen Accumulation in Two Temperate Forest Soils. Pedobiologia, 31, 335-347.
- He, Z.L., Alva, A.K., Calvert, D., et al. (1999) Ammonia Volatilization from Different Fertilizer Sources and Effects of Temperature and Soil pH. Soil Science, 164, 750-758. https://doi.org/10.1097/00010694-199910000-00006
- Huang, Y.Z., Feng, Z.W. and Zhang, F.Z. (2000) Study on Nitrogen Loss in Farmland and Its Countermeasures. Journal of Graduate School of Chinese Academy of Sciences, 17, 49-58.
- Mo, Y.Y. (2014) Natural Rubber Is Produced in More than 60 Countries around the World. Journal of Chinese Tropical Agriculture, No. 5, 75-76.
- Lan, G.Y., Wu, Z.X., Chen, B.Q., et al. (2017) Species Diversity in a Naturally Managed Rubber Plantation in Hainan Island, South China. Tropical Conservation Science, 10, 1-7. https://doi.org/10.1177/1940082917712427
- Gessesse, B., Bewket, W. and Bräuning, A. (2015) Model-Based Characterization and Monitoring of Runoff and Soil Erosion in Response to Land Use/Land Cover Changes in the Modjo Watershed, Ethiopia. Land Degradation and Development, 26, 711-724. https://doi.org/10.1002/ldr.2276
- Seutloali, K.E. and Beckedahl, H.R. (2015) Understanding the Factors Influencing Rill Erosion on Roadcuts in the South Eastern Region of South Africa. Solid Earth, 6, 633-641. https://doi.org/10.5194/se-6-633-2015
- Ochoa, P.A., Fries, A., Mejía, D., et al. (2016) Effects of Climate, Land Cover and Topography on Soil Erosion Risk in a Semiarid Basin of the Andes. Catena, 140, 31-42. https://doi.org/10.1016/j.catena.2016.01.011
- Zhang, M. and Zou, X.M. (2009) Comparison of Soil C and N in Rubber Plantation and Seasonal Rain Forest. Chinese Journal of Applied Ecology, 20, 1013-1019.
- Cao, J.H., Jiang, J.S., Tao, Z.L., Xie, G.S. and Zhao, C.M. (2010) Loss of Mineral Elements in Latex from Rubber Trees at Various Ages. Chinese Journal of Tropical Crops, 31, 1-5.
- Meng, Y., Xue, H.H., Sha, L.Q. and Tang, J.W. (2001) Dynamics of Soil Ammonium Nitrogen and Nitrate Nitrogen under Different Tropical Forests in Xishuangbanna. Acta Phytoecology, 25, 99-104.