How to apply molybdenum fertilizer?
Molybdenum fertilizer is a kind of fertilizer that plays a key role in crop growth. How on earth should Molybdenum fertilizer be applied? The following is an introduction to the application of Molybdenum fertilizer: the application method of Molybdenum fertilizer. Molybdenum fertilizer is usually used as base fertilizer with ammonium molybdate 0.01 kg per mu, mixed with calcium superphosphate to form calcium molybdate, and can also be mixed with potassium fertilizer and boron fertilizer, and the effect can be obtained. two。 Because Molybdenum fertilizer is expensive, it is the most common method to use Molybdenum fertilizer as seed fertilizer. It has been proved by practice that Mo fertilizer is a method of saving labor, saving fertilizer, convenient operation and good effect, which is worth advocating. Seed fertilizer is mixed with seed soaking. Seed dressing: 1 gram of ammonium molybdate per 0.5 kg of seed. When mixing, dissolve the Mo fertilizer with a small amount of hot water (50 ℃), then dilute it with cold water to the required volume (calculated according to 0.5 kg seed 50 g water), stir the seed while spraying. When stirring, do not break the seed coat, so as not to affect germination, but be sure to mix evenly. After mixing, spread out to dry and sow. If the seeds are to be treated with pesticides, you can wait for the seeds to dry and then mix them with pesticides, or when you mix fertilizer, mix them together. Seed soaking: with 0.05% ≤ 0.1% ammonium molybdate solution (that is, 50 kg water plus 25 g Mo fertilizer), soybean, peanut and other leguminous crop seeds can be soaked for 6 h for 12 hours, corn and other gramineous crops can be soaked for about 20 hours. After soaking and drying, you can sow. When sowing, the moisture should be good, otherwise it will affect the germination. How to apply Molybdenum fertilizer 3. The spray on the leaf surface is usually sprayed with 0.05% ≤ 0.1% concentration, depending on the size of the plant. Generally, 50 × 75 kg per mu of liquid is usually sprayed 3 times at seedling stage or anthesis, each time at an interval of 7 to 10 days. Soybean is a crop that needs more Mo, and it is the critical stage of Mo demand at flowering and podding stage. It is very obvious to seize the opportunity to spray soybean on the leaf surface. 4. The combined application of Molybdenum and P can promote each other and enhance the fertilizer efficiency. Mo fertilizer and phosphate fertilizer are used in combination, and then nitrogen fertilizer is better. For example, 15 grams of ammonium molybdate, 0.5 kg of urea and 1 kg of superphosphate are used per mu. The method is to mix superphosphate with 75 kg water for the night, and the following day the slag will be filtered out by adding Molybdenum fertilizer and urea to spray topdressing.
