本试验在常规施肥的基础上，通过施用有机缓释肥进行等氮、减氮及减少施用次数试验，探究有机缓释肥减量减次对婺城地区晚稻生产的影响。试验结果显示，与常规处理相比，有机等氮处理晚稻增产显著，有机减 N 20％处理晚稻小幅增产，而有机减 N 20％不追处理晚稻产量略有下降，有机减 N 40％处理晚稻产量则出现大幅降低。有机缓释肥是一种优良的缓释肥，对于婺城区水稻种植，可施用有机缓释肥替代普通平衡型复合肥，施用方式为一基一追，可比常规施肥减少一次追肥，达到省时省工的目的，也可适当减少肥料投入，达到减量增效的目的。另外，施用有机缓释肥也可采用一次性基施施肥方式，此方式不建议减肥，同时应及时关注水稻长势，如果水稻后期出现脱肥现象，应及时追肥。
Effect of reduction of organic slow-release fertilizer application rates and time on late rice yield in Wucheng Distrist
On the basis of conventional fertilization,organic slow-release fertilizer was applied to test the effects of equal nitrogen input,nitrogen reduction and application time reduction on late rice production in Wucheng District.The results showed that compared with conventional treatments,the yield of late rice was significantly increased under equal nitrogen input treatment,slightly increased under nitrogen reduction by 20％,slightly decreased under equal nitrogen without topdressing and significantly decreased under nitrogen reduction by 40％.Organic slow-release fertilizer is an excellent slow-release fertilizer.For rice cultivation in Wucheng District,organic slow-release fertilizer can be used instead of general balanced compound fertilizer.The application method is one base fertilizer and one topdressing,which can save the time and labor compared with conventional fertilization,and can also appropriately reduce the fertilizer input to achieve the goal of reducing quantity and increasing efficiency simultaneously.In addition,organic slow-release fertilizer can also be applied as one-time base fertilization,however,fertilization reduction was not recommended.Meanwhile,more attention should be paid to the growth of rice,if a phenomenon of shortage of fertilizer supply occurred in the later growth stage,fertilization should be applied timely.
万方数据
维普
