不同施肥处理对水稻经济性状和土壤硝态氮含量的影响  

Effects of Different Fertilization Treatments on Economic Characters of Rice and Nitrate Nitrogen Content in Soil

作　　者：王长军[1] 王世荣[1] 赵营[1] 

机构地区：[1]宁夏农林科学院农业资源与环境研究所,宁夏银川750002

出　　处：《贵州农业科学》2015年第10期60-63,共4页Guizhou Agricultural Sciences

基　　金：宁夏农林科学院科技先导资金基础研究项目"宁夏主要生态类型区土壤肥力定位监测"(NKYJ-15-04)

摘　　要：为给宁夏引黄灌溉区水稻合理施肥提供技术支撑和理论依据,以富源四号为试验材料,采用随机区组试验方法进行不同施肥处理对水稻经济性状及土壤硝态氮含量影响的研究。结果表明：各处理籽粒和秸秆产量较不施肥（CK）均有不同程度的提高,籽粒增幅为22.2%~75.1%,秸秆增幅为24.5%~128.5%。其中,1.5倍氮磷钾＋常量有机肥（1.5NPKM）处理的籽粒产量和秸秆产量最高,分别为10.9kg/hm2和13.5kg/hm2;氮磷钾＋常量有机肥（NPKM）处理次之,分别为10.7kg/hm2和11.9kg/hm2,但二者差异不显著（p〉5%）。CK的千粒重最高,为24.9g。1.5NPKM处理的穗粒数和单位面积有效穗数最高,分别为106粒/穗和526.5万穗/hm2,而结实率却最低,为68.9%。1.5NPKM处理0~100cm土层土壤的硝态氮残留最高,为7.19 mg/kg;磷钾（PK）处理的最低,为1.56 mg/kg。结论：在宁夏引黄灌溉区,以NPKM处理作为水稻施肥参照较为科学。In order to provide technical support and theoretical basis for rational fertilization of rice in the Yellow River irrigation district of Ningxia, effects of different fertilization treatments on economic characters of rice and nitrate nitrogen content in soil was studied by randomized block design using Fuyuan 4. Results： Grain yield of various fertilizer treatments was 22. 2% ~ 75. 1% higher than that of CK treatment, biomass yield of various fertilizer treatments was 24. 5% ~ 128. 5% higher than that of CK treatment, the highest grain yield and biomass yield was 1.5 NPKM treatment while that were 10.9 kg/ hm2 and 13.5 kg/hm2 respectively. The second was NPKM treatment that was respectively 10.7 kg/hm2 and 11.9 kg/hm2 , but the difference was not significant （p〉 5%）. The highest thousand seed weight was CK treatment that was 24.9 g. The highest productive ear kernels per spike and number of productive ear was 1.5 NPKM treatment that was 106 grain and 5,265,000 spike per hectare,while the lowest setting percentage was 1.5 NPKM treatment that was 68.9%. The highest nitrate nitrogen content of 0~100 cm soil layer was 1.5 NPKM treatment that was 7.19 mg/kg, while the lowest was PK treatment that was 1.56 mg/kg. In conclusion, It is more reasonable Yellow River irrigation district of Ningxia. referring to NPKM treatment for rice fertilization in the

关 键 词：施肥 水稻 经济性状 土壤 硝态氮 

分 类 号：S511[农业科学—作物学]