自压吸气增氧灌溉对水稻生长及产量的影响

Effects of the Self-pressurized Inspiratory Aeration Irrigation on the Growth and Yield of Rice

为探索自压吸气增氧灌溉对水稻生长及产量的影响,研制了自压吸气放水管,设计4种田间灌溉排水模式,分析自压吸气增氧灌溉对水稻生长及产量的影响。结果表明:4种灌排模式中,增氧灌溉处理水稻的生长及产量均优于不增氧处理,但不同灌溉模式下增氧对促进水稻生长的效果差别较大。增氧对常规灌溉模式下水稻增产的促进作用最为明显。增氧灌溉对常规模式下水稻分蘖前期分蘖的促进作用比较明显,对灌溉模式Ⅱ水稻分蘖后期分蘖的促进作用比较明显。

In order to explore the effects of self-pressurized inspiratory aeration irrigation on the growth and yield of rice,a self-pressurized inspiratory aeration irrigation pipe was developed,four kinds of field irrigation and drainage models were designed,the effects of self-pressurized inspiratory aeration irrigation on the growth and yield of rice were analyzed.The results showed that the growth and yield of rice under oxygenation were better than those without oxygenation treatment among the four irrigation and drainage models,but the promotion effect of oxygenation under different irrigation models on the growth of rice was quite different.Oxygenation with conventional irrigation model had the most obvious promoting effects on the yield increase of rice.Oxygenation had more obvious promoting effects on the tillering of rice at the early tillering stage under conventional irrigation model,and it had more obvious promoting effects on the tillering of rice at the late tillering stage underⅡirrigation model.