节灌条件缓释肥对水稻株高、分蘖、叶绿素及产量的影响

The Impact of Applying Slow-Release Fertilizer to Rice Height,Tiller,Chlorophyll and Yield Based on Water-saving Irrigation

为研究水稻节水灌溉条件施用缓释肥的适宜性,于2014年水稻种植期开展了不同水肥处理水稻种植的桶栽试验。结果表明,缓释肥对植株叶绿素SPAD值、分蘖数的最终促进作用均明显强于常规肥,对株高的促进也并不比常规肥弱。淹灌缓释肥处理产量最高达15542kg/hm^2,间歇灌溉常规肥次之为11408kg/hm^2,间歇灌溉缓释肥最低仅为6074kg/hm^2。施用缓释肥水稻总干物质积累量平均高出常规肥处理164.7%。水稻传统间歇灌溉模式可能并不适用于缓释肥。

To study the suitability of applying slow-release fertilizer of rice cultivation coupled with water-saving irrigation,barrels of rice cultivation experiment under different fertilization and irrigation treatments were carried out during the rice growing period in 2014.Results show that final promoting effect for rice chlorophyll SPAD value,tiller number applying slow-release fertilizer are obviously better than that applying conventional fertilizer,and is not weaker than that for height.The highest yield is 15 542kg/hm^2 gained by continuous flooding irrigation and slow-release fertilizer treatment,the second is 11408kg/ha by alternate wetting and drying and conventional fertilizer,the lowest is only 6 074kg/hm^2 by alternate wetting and drying and slow-release fertilizer treatment.Total dry matter accumulation applying slow-release fertilizer is 164.7% higher than that applying conventional fertilizer on average.So we conclude that traditional AWD mode of rice cultivation may not apply to slow-release fertilizer.