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氮肥和氮磷钾配比对蓖麻生育特性、干物质积累和产量的影响 预览

Effects of Nitrogen Application Rate and Nitrogen-Phosphorus-Potassium Ratio on Growth Characteristics, Dry Matter Accumulation and Yield of Castor Plants
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摘要 在粘壤土上开展试验,研究了施氮量和氮磷钾配比对蓖麻品种淄蓖7号生长特性、干物质积累和产量的影响。结果表明:施氮量、氮磷钾配比以及两者互作对蓖麻的生长特性、干物质积累和产量均产生了显著或极显著的影响;随着施氮量从225.0 kg/hm~2到375.0 kg/hm~2、氮磷钾配比从1∶0∶0提高到1∶0.9∶1.5,蓖麻的株高、叶干重、茎干重、叶面积指数、籽粒产量均显著增加;籽粒产量的增加主要来源于每株穗数的增加和百粒重的提高;施氮量375 kg/hm~2、氮磷钾配比1∶0.9∶1.5处理的籽粒产量最高,达2163.6 kg/hm~2。 A field experiment was carried out in clay loam to investigate the effects of nitrogen application rate and nitrogen-phosphorus-potassium ratio on the growth characteristics, dry matter accumulation and grain yield of castor variety Zibi No. 7. The results indicated that: nitrogen application rate, nitrogen-phosphorus-potassium ratio, and their interaction all had significant or very significant effects on the growth characteristics, dry matter accumulation and grain yield of castor plants;when the application rate of nitrogen increased from 225.0 kg/hm~2 to 375.0 kg/hm~2, and the nitrogen-phosphorus-potassium ratio increased from 1∶0∶0 to 1∶0.9∶1.5, the plant height, dry leaf weight, dry stem weight, leaf area index and grain yield of castor plants all increased significantly;the increase in grain yield was caused mainly by the increase in both single-plant spike number and 100-grain weight;the treatment of applying 375 kg/hm~2 nitrogen combined with the nitrogen-phosphorus-potassium ratio of 1∶0.9∶1.5 obtained the highest castor grain yield(2163.6 kg/hm~2).
作者 吴慧 殷婕 朱广龙 焦秀荣 周桂生 WU Hui;YIN Jie;ZHU Guang-long;JIAO Xiu-rong;ZHOU Gui-sheng(Experimental Farm,Yangzhou University,Yangzhou 225009,China;Joint International Research Laboratory of Agriculture and Agroproduct Safety,Ministry of Education,Yangzhou 225009,China;Institute of Agricultural Science and Technological Development,Yangzhou University,Yangzhou 225009,China)
出处 《江西农业学报》 CAS 2019年第3期71-75,共5页 Acta Agriculturae Jiangxi
基金 中央财政农业技术推广项目(TG(16)010) 江苏省重点研发计划(现代农业)(BE2016345) 江苏省农业科技自主创新资金项目(CX(16)1005).
关键词 蓖麻 施氮量 氮磷钾配比 生育特性 产量 产量构成 Castor Nitrogen application rate Nitrogen-phosphorus-potassium ratio Growth characteristics Yield Yield components
作者简介 吴慧(1978─),女,江苏泰兴人,农艺师,农业推广硕士,主要从事农业技术推广工作;通讯作者:周桂生。
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