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Position: Home > Articles > Effects of N,P,K and their combinations on yield and benefit of hybrid Pennisetum purpureum cv. Guimu No.1 grown in field bund Pratacultural Science 2009,26 (12) 102-106

氮磷钾配施对田周地种植桂牧1号杂交象草产量及效益的影响

作  者:
闫景彩;陈金龙
单  位:
北京林业大学草坪研究所;湖南农业大学动物营养研究所
关键词:
桂牧1号;田周地;肥料效应函数;肥料需要量
摘  要:
通过不同的施肥处理方案研究在田周地种植桂牧1号杂交象草Pennisetum purpureumcv.Guimu-1的氮、磷、钾需要量及其最佳配比模式。结果表明,在田周地种植桂牧1号杂交象草,通过合理的氮、磷、钾配方施肥,能够达到良好的生产效果与效益。实测结果以N2P2K2(氮肥414 kg/hm2,磷肥138 kg/hm2,钾肥276 kg/hm2)试验组的产量最高[(256.81±1.18)t/hm2],与其他低水平试验组差异均达到极显著水平(P<0.01);与无肥处理相比,增产率达到16.6%。通过对各处理进行效应模型的配置与分析,得出田周地种植桂牧1号杂交象草的预测最高产量为259 t/hm2,对应施肥量为氮肥414~621 kg/hm2、磷肥140kg/hm2、钾肥204 kg/hm2;预测最佳经济产量为256 t/hm2,对应施肥量为氮肥414 kg/hm2、磷肥140kg/hm2、钾肥172 kg/hm2。
译  名:
Effects of N,P,K and their combinations on yield and benefit of hybrid Pennisetum purpureum cv. Guimu No.1 grown in field bund
作  者:
YAN Jing-cai1,2,CHEN Jin-long2(1.Turfgrass Research Institute,Beijing Forestry University,Beijing 100083,China;2.Animal Nutrition Institute,Hunan Agricultural University,Changsha 410128,China)
关键词:
Pennisetum purpureum cv.Guimu No.1;field bund;fertilizer effect function;fertilizer demand
摘  要:
The demands and optimum proportion of N,P and K of hybrid Pennisetum purpureum cv.Guimu No.1 grown in field bund were studied with "3414" design.The results showed that its response to formula fertilizing was good.Among the treatments,the best one is N2 P2 K2(N 414 kg/hm2,P2O5 138 kg/hm2,K2O 276 kg/hm2) and its yield was the highest [(256.81±1.18) t/hm2],and the difference with the low level treatments was significant(P<0.01).The yield was increased by 16.6% compared with the check.Based on the analysis of the effect prediction model,the estimated highest yield was 259 t/hm2 and the relevant fertilizing formula was 414 to N 621 kg/hm2,P2O5 140 kg/hm2 and K2O 204 kg/hm2.The best economic formula wasN 414 kg/hm2,P2O5 140 kg/hm2 and K2O 172 kg/hm2,and the relevant yield was 256 t/hm2.

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