摘要
采用田间小区试验探讨了"中氮量配比"(N,P2O5,K2O比率为190,90,100 kg/hm2)、"高氮量配比"(N,P2O5,K2O比率为210,90,100 kg/hm2)、"低氮量配比"(N,P2O5,K2O比率为170,90,100 kg/hm2)以及"常规配比"(N,P2O5,K2O比率为216,112.5,202.5kg/hm2)4种不同氮、磷、钾配比施肥对饲料稻威优198光合特性和产量的影响。结果表明,与常规配比处理相比,中氮量配比、高氮量配比和低氮量配比处理能显著提高饲料稻功能叶(旗叶)叶绿素含量、净光合作用速率和籽粒产量,显著降低功能叶胞间CO2浓度。
Four different treatments were compared relatively to their effects on the photosynthesis characteristics and the grain yield by filed experiments. The fertilizer ratio （N：P2O5 ：K2O） in the four different treatments were the ＂Medium Nitrogen Ratio＂ （i e, the ratio of N：P2O5：K2O is 190：90：100 kg/hm^2） ,the ＂High Nitrogen Ratio＂ （N：P2O5 ：K2O is 210：90：100 kg/ha） ,the ＂Low Nitrogen Ratio＂ （N ： P2O5 ： K2O is 170 ： 90 ： 100 kg/hm^2） , and the ＂Conventional Ratio＂ （N ： P2O5 ： K2O is 216 ： 112.5 ： 202.5 kg/ hm^2 ）. The results showed that the chlorophyll contents and net photosynthesis rate of functional leaves and grain yields treated with the ＂Medium Nitrogen Ratio＂, the ＂High Nitrogen Ratio＂ and the ＂Low Nitrogen Ratio＂ had been improved significantly, while the intercellular CO2 concentration of the functional leaves had been decreased significantly compared with those of the ＂Conventional Ratio＂ treatment.
出处
《湖南农业科学》
2007年第6期109-112,共4页
Hunan Agricultural Sciences
基金
国家"十五"攻关项目(2001BA507A)
农业科技成果转化资金资助(04EFN214300214)
关键词
饲料稻
叶绿素
净光合速率
胞间CO2浓度
产量
fodder rice
chlorophyll
net photosynthesis rate
intercellular CO2 concentration
yield
作者简介
谢桂先（1979-），男，湖南冷水江市人，在读博士生，主要从事植物营养生理生态研究。
