陕西省粮食生产与化肥施用

Grain Production and Fertilization in Shaanxi Province

根据历史文献与农业统计资料以及试验结果，研究了陕西省粮食生产与化肥施用进程及其相互关系。１９３１～１９９４年（６４ａ）全省粮食总产量攀登了１３个高峰，１９４７～１９９４年（４７ａ）按照化肥对粮食总产的作用分为４个时期，１９７８年以来，粮食增产对化肥的依赖度日益增强。预测今后化肥施用量增长速度将超过粮食总产量增长速度。２０００年化肥需要量为１１０５７～１１９１９万ｔ，２０１０年为１６０６２～１７２３５万ｔ。化肥要集中施用于中产偏上和中产地区，优先施用于高产与中产作物，全面实施高效施肥技术。还需加强吨粮田与高产粮田的土壤—植物营养研究，促进粮食稳定增长与土壤—植物营养学科发展。

This paper studied history progress of grain production and fertilization and it′s relationship Results abtained showed that since the 30s grain yields constantly increased and it′s obtained 13 time most high yields in 1931～1994 According to correlation befoeen the fertilization and the grain production divided four period:1947～1950,1951～1964,1965～1977,1978～1994Since 1978 the grain yields under the control of fertilizationThere are required applicafion of fertilizers 11057～11909×103tin 2010 yearsFor raise grain yields may be increase in fertilizer quantity and it′s efficiency and then the fertelizer major applicated in high yield and middle yield of the area and the cropWhile may be increased fertilizer practice