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随着粮食产量的不断提高和氮、磷、钾化肥用量大幅度增加,一些碳酸盐黑土中微量元素锌已成为提高粮食产量的限制因子之一。肇州县碳酸盐黑土玉米缺锌的“白苗病”已较为严重。为了研究碳酸盐黑土地区玉米施用锌肥的问题,我们对锌肥施用方法和施用量等方面进行了试验。试验设计如下。施锌肥的方法有种肥、拌种和浸种三种,每种施锌方法有两级用量,另加一对照,因此试验共有7个
With the continuous increase of grain output and the significant increase of nitrogen, phosphorus and potassium fertilizer use, some trace elements zinc in carbonate black soil has become one of the limiting factors to increase grain yield. Zhaozhou County carbonate black soil corn zinc deficiency “white seedling disease” has been more serious. In order to study the application of zinc fertilizer to maize in carbonate black soil area, we conducted experiments on the application methods and application rates of zinc fertilizer. The experimental design is as follows. The method of applying zinc fertilizer There are three kinds of fertilizer, seed dressing and soaking, each method has two levels of zinc dosage, plus a control, so a total of seven trials