[Hu, L.; Du, P.; Mao, T.] South China Agr Univ, Coll Engn, Guangzhou 510642, Guangdong, Peoples R China.
[Hu, L.; Du, P.; Mao, T.] Minist Educ, Key Lab Key Technol South Agr Machine & Equipment, Guangzhou 510642, Guangdong, Peoples R China.
[He, L. X.; Tang, X. R.; Luo, H. W.; Lai, R. F.] South China Agr Univ, Coll Agr, Dept Crop Sci & Technol, Guangzhou 510642, Guangdong, Peoples R China.
[Tang, Q. Y.] Hunan Agr Univ, Coll Agr, Changsha 410128, Hunan, Peoples R China.