不同用量包膜肥对油菜氮素吸收和产量的影响  

Effects of Different Rates of Coated Fertilizer on Nitrogen Absorption and Yield of Oilseed Rape

作　　者：荣楠[1] 宋海星[1,2,3] 杨勇[1,2,3] 

机构地区：[1]湖南农业大学,长沙410128 [2]土壤肥料资源高效利用国家工程实验室,湖南长沙410128 [3]农田污染控制与农业资源利用湖南省重点实验室,长沙410128

出　　处：《作物研究》2017年第2期125-129,共5页Crop Research

基　　金：国家支撑计划项目(2014BAC09B01-01;2014BAD14B01;2012BAD15B04)

摘　　要：采用田间小区试验,研究不同用量包膜肥(3750、3000、2250、1500和750 kg/hm^2)对‘湘杂油1613’氮素吸收和籽粒产量的影响。结果表明,施用包膜肥油菜籽粒产量和油分产量明显增加,施肥量为1500 kg/hm^2时籽粒产量和油分产量最高,分别达到2066.9和848.1 kg/hm^2。建模计算包膜肥最佳施肥量为1611.0 kg/hm^2,产量达到2164.9 kg/hm^2,相比普通肥增产13.6%,施肥量减少13.9%。相同施肥量条件下,施用包膜肥油菜氮代谢活跃,氮素积累量和游离氨基酸总量升高,氮素吸收效率明显提高。A field experiment was conducted to investigate the effects of coated fertilizer on the grain yield and nitrogen ab-sorption of oilseed rape. The oilseed rape 4 Xiangzayou 1613,was grown under five different fertilizer rates of 3750,3000, 2250,1500 and 750 kg/hm^2 respectively. The results showed that the oilseed yield and oil production were increased sig-nificantly. When couted fertilizer applied. When the coated fertilizer rate was 1500 kg/hm^2 ,the highest oilseed yield and oil yield were 2066. 9 kg/hm2 and 848. 1 kg/hm^2 respectively. The results of model calculation indicated that the rate coa-ted fertilizer at 1611. 0 kg/hm^2 ,the oilseed yield may increase to the highest at 2164. 9 kg/hm^2 increased oilseed yield by 13. 6% ;and the fertilizer rate may decrease by 13. 9%. At the same application rate of coated fertilizer,the rape nitrogen metabolism was more active. The total amounts of nitrogen accumulation and free amino acids were relatively higher, the nitrogen absorption efficiency was significantly improved.

关 键 词：油菜 施肥 包膜肥 氮素吸收 产量 

分 类 号：S565.062[农业科学—作物学]