摘要
针对冬种马铃薯收获后土壤肥力残留较多,早晚稻施肥量大,造成肥料浪费和利用率低下的现状,开展田间试验,研究"薯-稻-稻"轮作模式下早晚双季稻施肥减量对其农艺性状、产量、肥料利用率和种植效益等的影响。结果表明,当早、晚双季稻的施肥量减少至农民习惯施肥量(T1)的80%(即T2)时,对水稻产量、品质和种植效益及肥料利用率影响不大;但当施肥量减少至农民习惯肥量(T1)的60%(即T3)时,对双季水稻产量、品质和种植效益及肥料利用率影响较大。因此,建议在冬种马铃薯收获后的田块种植早、晚双季稻,其合理施肥量应减少至农民习惯施肥量的80%。
According to the present status of fertilization waste and low utilization rate caused by a large amount of fertilizer residue in previous winter potato soil and heavy fertilization of early and late rice, the experiment was carried for studying the effect of agronomic traits, yield, fertilizer utilization rate and benefit when fertilizer reduction of early and late rice based on the ‘ potato-rice-rice＇ rotation system. The results showed that, while reducing the amount of fertilizer（T2） to 80% of the conventional fertilizer（T1）, there was little effect in the yield,quality, benefit and fertilizer utilization rate; But when reducing the amount of fertilizer（ T3） to 60% of the conventional fertilizer（ T1）, there was great effect in the yield, quality, benefit and fertilizer utilization rate. We recommended 80% of the conventional fertilizer was the rational fertilizer amount for early and late rice based on the ‘potato-rice-rice＇ rotation system.
出处
《热带作物学报》
CSCD
北大核心
2016年第10期1877-1881,共5页
Chinese Journal of Tropical Crops
基金
公益性行业(农业)科研专项经费项目(No.201503123-03)
关键词
冬种马铃薯
水稻
减量施肥
产量
利用率
品质
Winter potato
Rice
Reduction fertilization
Yield
Utilization rate
Quality
