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施肥量对高产夏玉米需肥规律的影响
引用本文:张智猛; 戴良香,郭景伦,李伯航.施肥量对高产夏玉米需肥规律的影响[J].玉米科学,1995,3(4):056-061.
作者姓名:张智猛; 戴良香  郭景伦  李伯航
作者单位:河北农业技术师范学院 昌黎 066600;北京市农科院作物所;河北农业大学
摘    要:本文研究了不同施肥量对高产夏玉米器官中氮、磷、钾的吸收、积累和分配的影响,并对施肥量问题进行了探讨。结果表明,玉米在氮、磷、钾累积吸收数量和消长速度上,高肥量处理显著高于低肥量处理(t=0.05)。施肥量基本不影响磷和钾的吸收动态,而氮的吸收动态两处理间不一致。玉米在氮的吸收过程中,高肥量处理出现两个高峰,分别在大喇叭口期和吐丝后15天.而低肥量处理只在大喇叭口期出现一个高峰.掖单51号每公顷生产11613公斤子粒,最高需肥量N230.25公斤、P2O5104.25公斤、K2O212.70公斤.三要素的比例为1:0.45:0.92,生产百公斤子粒所需N、P2O5、K2O分别为1.983、0.898、1.832公斤.氮、磷、钾的最大吸收强度分别为4.86、2.49、7.62公斤·公顷-1·日-1,完熟期子粒中的氮、磷、钾分配率分别为58.90、82.40和12.50%.

关 键 词:夏玉米    施肥量    养分吸收    需肥规律
收稿时间:1995/1/12 0:00:00

Effect of Rate of Applied Fertilizer on Fertilizer Requirement of High-yield Summer-sown Corn
Zhang Zhimeng; Dai Liang xiang,Guo Jing lun and Li Bohang.Effect of Rate of Applied Fertilizer on Fertilizer Requirement of High-yield Summer-sown Corn[J].Journal of Maize Sciences,1995,3(4):056-061.
Authors:Zhang Zhimeng; Dai Liang xiang  Guo Jing lun and Li Bohang
Abstract:This paper dealed with the effect of different rates of fertilizer on uptake,accumulation and partition of N,P, K by hgh-yield summer-sown corn, and made a probe into the rates of applied ferilizer. The result showed the amounts and growth and decline rate of N,P,K of high fertilizer treatment(HFT) were significantly more than those of low fertilizer treatment (LFT) (t =0.05). The uptake trends of P,K were not affected by fertilizer treatments, but that of N was different between fertilizer treatments. There were two peaks of accumulation rates at 12-leaf and 15 days after silking respectively for HFT, and there was Only one peak of accumulation rate at 12-leaf for LFT. Maximumrequirements of N, P2O5 K2O of corn Yedan No. 51 yielded 11613kg/ha were 230.25,104.25, 212.70kg respectively. The ratio of three elements was 1: 0.45: 0.92. The amounts of N,P2O5, K2O for production of 100kg grains were 1.983, 0. 898 and 1.832kg.The maximum accumulation rates of N,P2O5 and K2O were 4.86, 2.49 and 7.62kg/ha.d, and percentage of nicrogen, phosphorus and potassium in grain at maturity were 58.9,82.4 and 12. 5%.
Keywords:Summer-sown Corn  Rate of fertilizer  Nutrient uptake  Regulation of fertilizer requirement
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