红枣摘心及水氮调控技术研究 (1)

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1、3.1.2方法...............................................................................................................................................183.1.3测定指标...................................................................................................................................

2、.....183.2结果与分析......................................................................................................................................193.2.1硝化抑制剂对土壤中NH+-N和NO2--N含量的影响...................................................................19433.2.2.硝化抑制剂对枣产量的影响.....................

3、...................................................................................203.2.3硝化抑制剂对枣品质的影响.......................................................................................................203.3讨论................................................................................

4、..................................................................213.4结论..................................................................................................................................................224.1材料与方法...............................................................

5、.......................................................................234.1.1试验材料........................................................................................................................................234.1.2试验处理...............................................................

6、........................................................................234.1.3测定指标.......................................................................................................................................234.2结果与分析................................................................

7、......................................................................244.2.1不同灌水周期10cm、20cm、30cm、40cm、60cm及100cm处土壤含水量的变化............244.2.2不同灌水周期下枣叶片中Pn日变化..........................................................................................2