Fertilizer is not as good as possible
According to relevant information, each kilogram of soil contains 3 to 5 kilograms of available boron, which is harmful to most crops, and it also inhibits the absorption of nitrogen fertilizer by crops. When 200 milligrams of copper are contained per kilogram of soil, wheat will die, for example, 250 milligrams. Will die; 0.2 kg of molybdenum per kilogram of soil, the grass that grows is toxic to livestock. Therefore, it is necessary to apply trace fertilizers rationally. The following three points should be noted when applying trace fertilizers.
One depends on soil fertilization. Different types of trace elements contained in different soils are not the same. Only knowing which type of element is missing from the soil can be effectively used to supplement the element fertilizer. Such as the lack of boron, zinc deficiency, its boron content of less than 0.5 parts per million, containing zinc less than one millionth of a million, it is a lack of fertilizer. Before they can be clarified, small-area tests can be applied again over large areas.
Second, we must look at crops applied to different crops on a variety of micro-fertilizer needs are also different, such as rice needs silicon; rape, legumes and other needs of boron; garlic, onions need selenium.
Third, the appropriate application of trace fertilizer is generally used as base fertilizer. 100-200 grams of boron per acre, or 100-150 grams of zinc fertilizer, or 100-250 grams of ferrous sulfate or 510 grams of copper sulfate, should not abuse.
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