【作者】 贾志锋； 周青平； 韩志林； 颜红波；

【Author】 JIA Zhi-feng~1,ZHOU Qing-ping~(2*),HAN Zhi-lin~2,YAN Hong-bo~2 (1.Qinghai University,Xining,Qinghai 810016;2.Qinghai Academy of Animal and Veterinary Sciences, Xining,Qinghai 810003)

【机构】 青海大学； 青海省畜牧兽医科学院；

【摘要】 研究了N、P用量及其配比对青引3号莜麦（Avena nuda L.‘Qingyin No.3’）秸秆株高、秸秆产量和种子产量,以及小穗数、单株粒重、每穗粒数和千粒重的影响。结果表明,除株高外,施肥处理对裸燕麦各生产性能指标均有显著影响（P<0.05）,在施N量0～135kg/hm²或施P量0～90kg/hm²下,随施肥量增加,种子产量和秸秆产量均明显提高。在N90P90和N135P90时,裸燕麦种子和秸草产量最高,分别为3400kg/hm²和20700kg/hm²。种子产量与穗数、千粒重、单株粒重和穗粒数间均呈极显著或显著正相关关系（P<0.01或P<0.05）。裸燕麦秸秆产量Yg或种子产量Ys（kg/hm²）可用其与N（kg/hm²）和P（P₂O₅,kg/hm²）肥间的二元二次回归方程Yg=16380.76+14.811N+32.272P-0.015N²-0.114P²+0.026NP（R²=0.886***）和Ys=2597.605+12.369N+4.277P-0.067N²-0.006P²-0.020NP（R²=0.959***）很好估测。更多还原

【Abstract】 The effects of different nitrogen and phosphorus levels on the plant height,stalk yield,seed yield,spikes,seed weight per plant,seeds of each spike and weight per 1000 seeds of naked oat（var.Qingyin No.3） were researched in this study.The results showed that,excluding of its plant height,the nitrogen and phosphorus fertilization had a significantly effect on each index of naked oat（P<0.05）,seed yield and stalk yield increased with the fertilizer levels increased from 0 to 135kg/hm² N or from 0 to 90kg/hm²P.Seed yield and grass yield were 3400kg/hm² and 20700kg/hm² for N₉₀P₉₀ and N₁₃₅P₉₀ plots,respectively.A positive correlation relationship exhibited between seed yield and spikes or seed weight per plant or seeds of each spike or weight per 1000 seeds spikes（P<0.01 or P<0.05）.Stalk yield or seed yield could be estimated by the following models,Yg=16380.76+14.811N+32.272P-0.015N²-0.114P²+0.026NP(R²=0.886^***) or Ys=2597.605+12.369N+4.277P-0.067N²-0.006P²-0.020NP(R²=0.959^***);where Yg（kg/hm²） and Ys（kg/ hm²） are stalk yield and seed yield,respectively,and P（P₂O₅,kg/hm²） and N（kg/hm²） and P（P₂O₅,kg/hm²） are their fertilizer levels.更多还原