[1] Zhao, B.Q., Zhang, F.S., Liao, Z.W., Xu, X.C., Xu, Q.M., Zhang, F.D., et al. (2004) Research on development strategies of fertilizer in China. Plant Nutrition and Fertilizer Science, 10, 536-545.
[2] Sun, C.H., Feng, L.X., Xie, Z.X., Li, C.D. and Li, J.C. (2007) Physiological characteristics of boll-leaf system and boll weight space distributing of cotton under different nitrogen levels. Scientia Agricultura Sinica, 40, 1638-1645.
[3] Li, C.D., Xie, Z.X. and Wang, W.X. (2004) Source and sink characteristics of various genotypes with different boll weight in cotton. Proceedings of the 4th International Crop Science Congress, Brisbane, 26 September-1 October 2004, 223.
[4] Lou, S.W., Zhang, J.S., Luo, X.S. and Zhou, Q. (2009) Influence of nitrogenous fertilizer level on agronomic characters, fourth leaf from top photosynthetic characteristics and yield of cotton. Journal of Xinjiang Agricultural University, 32, 39-42.
[5] Gerik, T.J., Jackson, B.S. and Stockle, C.O. (1994) Plant nitrogen status and boll load of cotton. Agronomy Journal, 86, 514-518.
[6] Boquet, D.J., Moser, E.B. and Breitenbeck, G.A. (1994) Boll wejght and within-plint yield distribution in field grow cotton given different levels of Nitrogen. Agronomy Journal, 86, 20-26.
http://dx.doi.org/10.2134/agronj1994.00021962008600010005x
[7] Sun, J.Z. and Chen, B.S. (1999) Cotton made to learn. China Agriculture Press, Beijing.
[8] Zhe, T.F., Lin, J.X. and Yang, Q. (1997) Fertilizer to scientific guidelines. Shield Press, Beijing, 16, 40.
[9] Xie, C.S., Tang, S.H., Xu, P.Z., Zhang, F.B. and Chen, J.S. (2006) Effects of single basal application of controlled-release fertilizers on growth and yield of rice. Plant Nutrition and Fertilizer Science, 12, 177-182.
[10] Kiran, J.K., Khanif, Y.M., Amminuddin, H. and Anuara, A.R. (2010) Effects of controlled release urea on the yield and nitrogen nutrition of flooded rice. Communicate Soil Science Plant Analyze, 41, 811-819.
http://dx.doi.org/10.1080/00103621003592333
[11] Xu, M.G., Li, J.M., Li, D.C., Cong, R.H., Qin, D.Z. and Shen, H.P. (2009) Effect of controlled-release nitrogen fertilizer on growth and fertilizer nitrogen use efficiency of double rice in southern China. Plant Nutrition and Fertilizer Science, 15, 1010-1015.
[12] Yang, Y.C., Zhang, M. and Zheng, L. (2010) Controlled release urea improved nitrogen use efficiency, yield, and quality of wheat. American Society of Agronomy, 103, 479-485.
[13] Haderlein, L., Jensen, T.L., Dowbenko, R.E. and Blaylock, A.D. (2001) Controlled release urea as a nitrogen source for spring wheat in Western Canada: Yield, grain N content, and N use efficiency. The Scientific World Journal, 1, 114-121.
[14] Wang, Q., Li, S.L., Han, Y.L., Wang, Y.L., Miao, Y.H., Wu, X.M., et al. (2007) Slow/controlled release fertilizer effect on wheat yield and fertilizer-nitrogen use efficiency. Chinese Journal of Soil Science, 38, 47-50.
[15] Yu, S.F., Yang, L., Zhang, M., Wu, W.L., Ju, X.T., et al. (2010) Effect of controlled release fertilizers on the biological properties of wheat and corn and soil nitrate accumulation. Journal of Agro-Environment Science, 29, 128-133.
[16] Zhao, B., Dong, S.T., Wang, K.J., Zhang, J.W., Liu, P., et al. (2009) Effects of controlled release fertilizers on summer maize grain yield, field ammonia volatilization, and fertilizer nitrogen use efficiency. Chinese Journal of Applied Ecology, 20, 2678-2684.
[17] Bao, S.D. (2000) Soil agricultural chemical analysis. 3rd Edition, China Agricultural Press, Beijing, 265-267.
[18] Li, L.L., Ma, Z.B., Lin, T.B., Fang, W.P. and Xie, D.Y. (2007) Effects of controlled release N fertilizer on cotton yield. Chinese Journal of Eco-Agriculture, 15, 45-47.