摘要
“烟-稻”种植制度中，晚稻前茬作物烤烟施用磷、钾肥量较大，烤烟没有吸收利用完的积累在土壤中，因此在实际生产中烟农晚稻不施底肥，只在插秧后7～10d施少量氮肥，不施磷、钾肥。利用湖南省主要农作物测土配方施肥手机专家系统，结合耒阳市农民生产实际，研究了当地“烟-稻”种植模式下氮肥不同施用量对晚稻有效穗、晚稻生育期、氮肥效应模型氮肥利用率，以及晚稻产量与效益的影响，为烟农高效种植“烟-稻”提供科学依据。
In ＂tobacco-rice＂ planting system, the application of phosphorus （P） and potassium （K） fertilizer of rice preceding crops was too much in Flue-cured Tobacco, the fertilizer was not absorbed by the flue-cured tobacco but accumulated in the soil, therefore, in the actual production of rice farmers do not apply the base fertilizer, only apply a small amount of nitrogen 7 to 10 days after rice transplanting , the phosphorus and potassium fertilizer are not a option. Used Hunan Province main crops mobile expert system for soil testing and formula fertilization, combined with the actual production of farmers in Leiyang, under ＂tobacco-rice＂ planting pattern, researched the effects of different nitrogen fertilizer application amount on late rice effective panicles, late rice growth period, nitrogen fertilizer effect model and utilization ratio estimation, late rice yield and benefit, provided scientific basis of high efficiency cultivation of ＂tobacco-rice＂ for tobacco growers.
出处
《湖南农业科学》
2016年第8期22-24,共3页
Hunan Agricultural Sciences
关键词
“烟-稻”
种植制度
最佳施肥量
＂tobacco-rice＂
cropping system
optimum fertilizer amount
