Super rice—Lingliangyou 268 was used as test materials, by combing controlled irrigation and aeration technology. Four treatments, namely mechanically controlled irrigation aeration(JX), were set up super-micro-bubble controlled irrigation aeration(WP), controlled irrigation(CK)and flood irrigation(YS), to identify effects of aeration on root growth characteristics and water use efficiency of super rice under controlled irrigation conditions. The results show that the effective water saving is up to 15.3% in maximum due to aeration under the controlled irrigation compared with food irrigation condition. Additionally, the root growth is promoted and the dry matter weight of rice roots is increased and the dry matter weight of both stem and leaf are reduced. So the root volume and thickness as well as dry matter weight have been improved significantly, and the root activity is enhanced, the aging of rice roots is delayed. In terms of yield, the controlled irrigation aeration is similar to the flood irrigation, but the seed setting rate, 1000-grain weight, and water use efficiency are better than the latter.
LIAO Jian-Cheng,HU De-Yong-*,PEI Yi et al. Effects of aeration on root growth and water use efficiency of super rice under controlled irrigation conditions[J]. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(9): 920-924.