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诸多关于施用锌氮肥对作物产量影响的报道,均称施用此肥有显著增产效益,尤其在玉米上,几乎没有因施用锌氮肥而造成减产的报道。我们于1984年进行了玉米施锌氮肥试验,并获得了与前人相反的结果,现报道如下。 材料与方法 供试玉米品种为黔单4号;锌氮肥为复合肥,含锌15.5％,含氮6.8％。试点设在息烽县永靖镇大型地,海拔1070M;地质为小黄泥重壤,成土母质为页岩;土壤肥力中上,其土壤养分含量,尤其有效Zn含量较丰富(表1)。 试验设5个处理,重复3次,小区面积0.05亩,随机区组排列。5个处理为:
Many reports on the impact of applying Zn and Zn fertilizers on crop yields all claimed that the application of this fertilizer had significant yield-increasing benefits. Especially on corn, there were few reports of yield reductions due to the application of Zn-Zn fertilizers. We conducted a test of zinc and nitrogen in maize in 1984 and obtained the opposite result from the previous one and are reported below. MATERIALS AND METHODS Corn varieties for Qiandan No.4 were tested. Zinc - nitrogen fertilizer was compound fertilizer containing 15.5% zinc and 6.8% nitrogen. Pilot site located in Xifeng County Yongjing large, 1070M elevation; geology of small yellow mud heavy soil, soil parent material is shale; soil fertility, the soil nutrient content, especially effective Zn content is rich (Table 1) . Experimental set up 5 treatments, repeated 3 times, the plot area of 0.05 acres, randomized block arrangement. 5 treatments are: