寒地水稻磷素施用量的研究  

Rice Phosphorus Fertilizer Research

作　　者：郑艳玲[1] 赵丽琴[1] 金立军[1] 

机构地区：[1]北大荒农业股份有限公司七星研发中心,黑龙江156300

出　　处：《现代农业科学》2009年第3期75-76,78,共3页

摘　　要：利用小区对比的方法,研究水稻空育131对磷素的需求和施磷量的确定。结果表明,随着施磷量的增加,磷肥产量贡献率和磷肥的偏生产力降低;生产100kg稻谷吸磷量变化数值为0.52～0.68kg,平均为0.62kg;土壤基础供磷量为4.09kg/667㎡。在试验土壤条件下,土壤速效磷含量为25.8mg/kg时,施入磷肥表现为增产效果较低。空育131最高产量施磷量为2.27kg/667㎡,最高产量620.38kg;最佳产量施磷量为1.63kg/667㎡,最佳产量618.62kg/667㎡。In contrast to community studied 131 pairs of sterile rice empty Phosphorus needs and determine the amount of phos- phorus. The results showed that with the increase in phosphorus, phosphate fertilizer and phosphate ,fertilizer production in the contribution rate of the partial productivity; production of 100 kilograms of rice P uptake changes in value of 0.52 - 0.68 kg, with an average 0.62 kg; foundation soil for phosphorus of 4.09 kg/667 m^2. During the trial the soil conditions, soil available phosphorus content of 25.8 mg / kg, the applied phosphate to yield a lower performance. 131 P maximum production capacity of 2.27 kg/667 m2, the maximum output of 620.38 kg; best production capacity of phosphorus 1.63 kg/667 m^2, the best output of 618.62 kg/667 m^2.

关 键 词：水稻 产量 施磷量 

分 类 号：S511[农业科学—作物学] S153.61