论文部分内容阅读
2008年通过GPS定位在广西柳江县基隆村水稻种植区8.69ha的水田上采集10个土壤样品,分析其碱解氮、速效磷和速效钾含量,同时运用GIS空间分析功能对土壤碱解氮、速效磷和速效钾进行空间插值分析,并依据所得土壤养分含量选择4块水稻田进行精准施肥与常规施肥对比试验,探讨在高度分散的农业生产管理模式下水稻精准施肥技术。田间试验结果显示,4田块精准施肥均比常规施肥增产,平均增产稻谷331.5kg/ha,增产率为5.6%;且节省肥料投入,每公顷平均减少肥料开支579.0元,综合稻谷增产值及肥料节支费用,每公顷平均增收1276.1元。
In 2008, 10 soil samples were collected from paddy fields of 8.69 ha paddy field in Keelung Village, Liujiang County, Guangxi Province, China. The contents of available nitrogen, available phosphorus and available potassium were analyzed. At the same time, Available phosphorus and available potassium for spatial interpolation analysis, and based on the soil nutrient content of the selected four paddy fields for precision fertilization and conventional fertilization comparative test to explore the highly dispersed agricultural production and management of rice precision fertilization technology. The results of field experiments showed that the precision fertilization in 4 plots increased compared with conventional fertilization, yielding 331.5kg / ha on average with an increase rate of 5.6%. Besides, the manure input was saved, and the average manure cost per hectare was reduced by 579.0 yuan. Cost savings, an average increase of 1276.1 yuan per hectare.