摘要
采用田间试验的方法，对苏南地区麦玉米稻三熟制中套作春玉米的合理施肥量和肥料配比进行了研究。结果表明，氮、磷和有机肥三因子对产量有较大的贡献，而钾肥增产作用不明显。产量与氮、磷化肥和有机肥之间的三元二次生产函数分析表明，氮肥与有机肥及磷肥与有机肥之间有明显的互作效应。在苏南中上等肥力水稻土上，套作春玉米７５００ｋｇ／ｈｍ２以上产量水平的肥料运筹为：总氮量２２５～３００ｋｇ，其中化肥氮１５０～２２５ｋｇ，有机氮７５～１５０ｋｇ；无机磷肥用量为７５～１５０ｋｇ。若有机肥取高限，则磷肥直取低限。
Field experiment method was adopted in this peper to study the rational fertilizer amount and the compostion applied to the relay croped spring corn in the wheat-corn-rice triple cropping system in the South Jiangsu district. Results showed that the N, P and the organic fertilizer were great contributors to the corn yield, while the role of K fertilizer was not obvious. The three-factor(N, P and the organic fertilizer), quadratic production function showed that there were significant interactions between N and the organic fertilizer, and between P and the organic fertilizer. On the paddy field with medium and high soil fertility in South Jiangsu, to get a high yield over 7 500 kg/hm2 of relayed corn, fertilization planning should be: the total nitrogen was 225-300 kg/hm2, among which chemical N was 150-225 kg, and organic N 75-150 kg. The chemical phosphorus 75-150 kg/hm2. If the organic fertilizer is applied at high level, the phosphorus level should be lower.
出处
《南京农业大学学报》
CAS
CSCD
北大核心
1995年第4期19-24,共6页
Journal of Nanjing Agricultural University
基金
国家自然科学基金
博士点基金
关键词
套作
春玉米
肥料
氮
磷
钾
有机肥料
relayed spring corn
fertilizer planning
production function model
