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Position: Home > Articles > Effect of Balanced Fertilization on Potato Growth in Semi-arid Area of Gansu Province Journal of Anhui Agricultural Sciences 2007,35 (6) 1724-1725

陇中半干旱区旱地马铃薯平衡施肥效应研究

作  者:
张国君;高世铭;张朝巍;黄杰;李彤
单  位:
甘肃省农业科学院;甘肃农业大学
关键词:
半干旱;马铃薯;平衡施肥
摘  要:
在陇中半干旱区旱地进行了马铃薯平衡施肥试验,结果表明:马铃薯最高产量达24 216.7kg/hm2,是当地平均产量的1.2倍,高磷处理比无磷处理增产马铃薯7510.8 kg/hm2,增幅44.96%,1kg P2O5增产马铃薯25kg,纯收益增加3 262元/hm2,施磷效益极显著。试验认为,OPT中钾量合适,磷量偏低,氮量可能偏高,最佳的施肥量为N200 kg/hm2、P2O5300 kg/hm2、K2O 150 kg/hm2,3种肥料的养分配比为N∶P2O5∶K2O=100∶150∶75。
译  名:
Effect of Balanced Fertilization on Potato Growth in Semi-arid Area of Gansu Province
作  者:
ZHANG Guo-jun et al(Gansu Agricultural University,Lanzhou,Gansu 730070)
关键词:
Semi-arid;Potato;Balanced fertilization
摘  要:
An experiment in the banlanced fertilization in semiarid area of central Gansu was conducted.The best yield was 24 216.7 kg/hm2 that was 1.2 times of local production level.Compared with the yield in non-P treatment,the treatment with 1/2 more P resulted in the of 7 510.8 kg/hm2(increased by 44.96%).The yield was increased in 25 kg/1 kg P2O5 application.The net income was increased to 3 262 yuan/hm2.So the effect of phosphorus fertilizer was very prominent. The field experiment showed that in OPT,the amount of K2O was appropriate;P2O5,the lower and the N,little higher.The best suitabale rate of N∶P2O5∶K2O was 100∶150∶75(200 kg/hm2N,300 kg/hm2 P2O5 and 150 kg/hm2 K2O)

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