长期定位施肥对冬小麦-夏玉米叶片叶绿素含量的影响

叶绿素含量是反映作物光合能力的一个重要指标,与作物产量形成有着极其密切的关系。为了通过施肥定量调控叶绿素含量,通过长期定位施肥来揭示氮肥-有机肥配合施用对冬小麦-夏玉米叶片叶绿素含量的影响规律。结果表明:随着氮肥或有机肥施用量的增加,无论是冬小麦还是夏玉米,叶片叶绿素含量(SPAD值)均会增大,与氮肥和有机肥的施用量的函数关系分别表达为:SPADwheat=1.7778×10-4M+2.4034×10-2N-2.0531×10-7MN+40.2111;SPADcorn=2.8567×10-4M+5.9650×10-2N-8.4903×10-7MN+40.3430;

The Effect on Long-term Fertilization to Chlorophyll Content of Winter Wheat (Triticum aestivum) and Summer Corn (Zea mays)

Chlorophyll content is the impotent index to photosynthetic activity of corps, and there is a very close relationship with yield. In order to control chlorophyll content by fertilization, in this paper ,the rule that the effect of N-Fertilizer and marure cooperation to chlorophyll content of winter wheat and summer corn was discovered by long-term fertilization. It was showed the chlorophyll content of winter wheat and summer corn would increase with N-Fertilizer and manure increasing, and the functions wer...