In autumn sowing crops, wheat must be applied with zinc fertilizer, rape must be treated with boron fertilizer, beans must be applied with molybdenum fertilizer, garlic must be applied with selenium fertilizer, and potato must be applied with manganese fertilizer. Although they are used in small quantities, they are indispensable.
Strategy 1: Immersion
First dilute the relevant micro-fertilizer with water, and then put the seed into the micro-fertilizer solution so that the seed can absorb the fertilizer solution and expand, and the nutrient enters the seed with the liquid. Therefore, in the soaking process, the seed must be frequently turned so that the seed can uniformly absorb the fertilizer solution. The commonly used soaking concentration and time are as follows: molybdenum is soaked with 0.05%~0.1% ammonium molybdate solution for 10~12 hours; boron fertilizer is soaked with 0.05% borax solution for 4~6 hours; zinc fertilizer is made with 0.05% zinc sulfate solution. Soaking for 12 to 24 hours; Manganese fertilizer is soaked in 0.1% manganese sulfate solution for 8 to 12 hours; Rare earth microelement fertilizer is soaked in 0.03% to 0.1% rare earth nitrate for 10 to 12 hours. After the seeds have been soaked, they can be sown after drying out.
Strategy two: seed dressing
First, use a small amount of water to dissolve the relevant fertilizer, and mix it with high-concentration fertilizer solution. Spray the fertilizer solution on the seeds and spray them while mixing to make the surface of the seed stained with a layer of fertilizer solution. In general, only 1 to 4 grams of micro-fertilizer is used per 0.5 kilogram of seeds, and seeds can be sown after the seeds are sucked and dried. If it is dry mix, it is necessary to fully mix the trace fertilizer powder with the seeds.
Strategy 3: Spraying
The micro-fertilizer is evenly sprayed on the foliage of the crop, and then absorbed by the leaves and then supplied to various parts of the plant. This is a common fertilization method, which is both economical and effective. The practice is: first dilute the water related to fertilizer and then spray. The number of sprays will be determined based on the length of the crop growth period. For sensitive crops and nutrient-deficient soils, multiple sprays should be used. Each spray should be moistened with stems and leaves. It is advisable to select sunny and evening spraying, to extend the moistening time of the fertilizer solution on the crop leaves as much as possible, and to enhance the effect of suction fertilizer.
Strategy 4: Soil Application
When the autumn sowing crop is sown, 0.5 to 1.5 kg of micro-fertilizer is sown into the sowing ditch at the same time as the seed. If the amount of soil applied is sufficient, it can be used during the whole growing period of the crop. Experiments showed that when the amount of micro-fertilizer is large, the trace nutrient content in the plant is large. Because the micro-fertilizer is easily fixed by the soil particles in the soil, the amount is large and the investment is high. Therefore, it should be used as much as possible to reduce the loss of soil in the season. Micro-fertilizer. As a result, not only the current season, but also for a few years still get better results. Therefore, the soil application method is suitable for the farmers who have better economic conditions and less labor.
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