摘要
以超级稻盐丰47为材料,通过氮(7水平)、磷(4水平)、钾(4水平)"3417"试验,探讨了滨海盐碱稻区高中低级土壤基础地力条件下,三要素不同施入量对水稻产量的影响。结果表明,在辽宁省大洼县西安农场的高、中级土壤肥力条件下,N、P2O5、K2O的最佳施用量分别为18.0、7.0、6.0 kg/667 m2,其比例为1︰0.39︰0.33,基础地力较高的土壤可获得750kg/667 m2左右的产量,基础地力中等的土壤可获得700 kg/667 m2左右的产量。在基础地力较低的土壤条件下,N、P2O5、K2O的最佳施用量为22.5、7.0、6.0 kg/667 m2,其比例为1︰0.31︰0.27,可获得650 kg/667 m2左右的产量。在高、中、低三级基础地力条件下,氮素均是影响水稻产量的主要因素,磷、钾位于第二、三位,但磷钾的影响程度远小于氮。
The effect of three major elements on yield of rice variety Yanfeng 47 was conducted through ＇3417＇ design in coastal rice planting area.The results showed that under high and medium soil fertility conditions,the high yields of rice 700 kg/667 m^2 and 750 kg/667 m^2 were obtained when the amounts of N,P2O5,K2O were 18.0,7.0,and 6.0 kg/ 667 m^2 with the ratio 1︰0.39︰0.33.The yield 650 kg/667 m^2 could be obtained in low soil fertility condition when N,P2O5,K2O were 22.5,7.0,and 6.0 kg/667 m^2 with the ratio 1︰0.31︰0.27.In high,medium and low basic soil fertility,nitrogen is the first factors affecting yield of rice,and the phosphorus and potassium are the next.
出处
《北方水稻》
CAS
2010年第4期19-21,24,共4页
North Rice
基金
辽宁省科技攻关项目"水稻高产高效栽培技术集成与示范"(2008201003
2009201003)课题资助
关键词
水稻
产量
最佳施肥量
肥料
生产效率
Rice
Yield
Optimum fertilizer amount
Fertilizer
Production efficiency
