上海市奉贤区水稻氮磷钾营养缺素试验的初步研究  

Preliminary study on rice under nitrogen,phosphorus or potassium deficiency in Fengxian District of Shanghai

作　　者：朱萍[1] 沈金芳[1] 钱非凡 陆金余 施秀燕 钱建光 

机构地区：[1]上海市奉贤区农业技术推广中心,上海201400 [2]上海市奉贤区庄行镇农业综合服务中心,上海201415 [3]上海市奉贤区奉城镇农业综合服务中心,上海201411 [4]上海市奉贤区金汇镇农业综合服务中心,上海201405

出　　处：《上海农业学报》2009年第2期131-134,共4页Acta Agriculturae Shanghai

摘　　要：分别对奉贤区的3个不同土壤类型、中等肥力水平的田块实施水稻缺素试验,研究氮磷钾肥对水稻生长的影响。结果表明:氮肥对水稻的群体增长有显著影响,磷钾肥的影响较小。肥料的增产率、单位肥料稻谷产出率均为氮肥>磷肥>钾肥。植株及稻谷中氮素的总吸收量为最佳施肥区>无磷钾肥区>缺氮区>无肥区。肥料平均利用率氮肥为22.46%,磷肥10.67%,钾肥32.87%。Field experiments with rice under N, P or K deficiency were carried out on three different soil types of medium-fertility farmland in Fengxian District to study effect of N, P and K fertilizer applications on rice. The results showed that N fertilizer had a remarkable effect on growth of rice population while P and K fertilizer/s effects were relatively little. The descending order was N fertilizer〉P fertilizer〉K fertilizer according to the rice yield growth rate produced by fertilizer ap- plication and the yield per unit fertilizer weight. The average fertilizer utilization ratio was 22.46% in N fertilizer, 10.67% in P fertilizer and 32.87% in K fertilizer.

关 键 词：水稻 生物学性状 肥效 产量 

分 类 号：S511.06[农业科学—作物学]