盐碱地水稻保苗控灌技术集成研究

The Integrative Technology of Control Irrigation for Rice Seedling in Saline-alkali Soil

为了改良并高效利用盐碱地、有效推动盐碱地水稻产业发展,进行水稻种子供氧剂包衣保苗、控制灌溉节水抑盐、施用土壤调理剂改良技术集成研究已成为宁夏引黄灌区盐碱地可持续发展的迫切需要。研究结果表明:控制灌溉+调理剂+供氧剂处理下,水稻生长发育较快较好、增产明显、收益较高。同时并未引起土壤盐分显著积聚,相反至水稻生长后期盐分降低,而且不同时期土壤养分含量及微生物含量较高。该技术集成的研究对于指导盐碱地水稻高产高效发展有重要意义。

In order to improve and efficiently utilize the saline-alkali land we conducted the researches on the integrative technology of rice seedling protection by a coated oxygen supply agent, the control irrigation for water saving and salt restraining, and the application of soil conditioner. This is an urgent need for the sustainable development of saline land in the Ningxia Yellow River area. The results showed that the combined application of control irrigation + soil conditioner + oxygen supply agent significantly promoted the rice growth, and increased its yield and income. At the same time, the above amendment did not cause a significant build-up of soil salinity, on the contrary, reduced the soil salinity in the late rice growth stage. Further, soil nutrient content and microbial biomass in different growth stages were higher. The technology integration research is beneficial to the high yield and efficiency of rice production in saline-alkali soil.