1. Maize corn has the characteristics of short growth period, rapid growth, concentration of fertilizer, water and fertilizer resistance. For every 100 kilograms of grain produced, nitrogen (N) should be absorbed from the soil (N) 2.5-2.7 kg, and phosphorus (P2O5) 1.1-1.4 kg. Potassium (K2O) 3.7-4.2 kg, and corn is particularly sensitive to zinc, so it should be noted that the application of zinc fertilizer to corn, corn fertilization can be mastered: 1, seedling management techniques after wheat harvest combined with cultivating, per acre of high quality Organic fertilizer 3 squares, blended with high quality zinc sulfate 1.5-2 kg. 2, 25-30 days after corn sowing (5-7 leaf stage), leaf age index 30%, the first top dressing, around June 25, about 50 kg of ammonium bicarbonate, superphosphate 40-50 Kg, 10 kg of potassium chloride or 20-25 kg of special formula fertilizer for Wo Li brand corn. 3. When the leaf age index is 70% after about 45 days of sowing (large trumpet period), the second top dressing is carried out, and the amount of carbon ammonium is 70 kg or 25 kg of urea. All fertilizers require acupuncture or strip application, covering the soil after application, avoiding application, and timely watering when the sensation is not good. 4, wheat straw wheat bran covered. Wheat straw can cover water, protect soil fertility, improve soil structure, reduce weed growth, and increase corn yield. Generally, from late June to mid-July, evenly spread wheat or wheat straw per acre. About kilograms. 5. For the high-yield demonstration field, on the basis of the above-mentioned fertilization, it is necessary to apply 30 kg of ammonium bicarbonate or 10 kg of urea in the corn tasseling period to meet the high-yield needs.
Second, the production management of peanuts and peanuts must focus on scientific fertilization and post-regulation on the basis of rational close planting and timely elimination of pests and diseases.
1. On the basis of adding organic fertilizer, nitrogen, phosphorus, potassium and calcium should be combined. The fertilization of peanut should emphasize the word “earlyâ€, and it can be applied 7.5-10 kg of urea in the seedling stage to the initial flowering stage. 40 kg of calcium, 10 kg of potassium chloride, 25-30 kg of calcium sulfate (gypsum). Fertilizer should be applied or applied in a hole. If it is not good, it should be watered in time.
2, foliar spraying "Peanut high-yield spirit" can prevent and control peanut white leaf disease, yellow leaf disease and other diseases, so that the plant is robust, the root system is developed, the effective side branches are more, the investment is less, the benefit is high, and the yield increase effect is obvious. Application method: “Peanut high-yield spirit†is sprayed once at the initial flowering stage and full flowering stage, each time 100 grams per mu, and 40 kg of water is mixed and sprayed.
3. Timely regulation in the middle and late stages: In the later stage of peanut growth, it is necessary to adjust the condition of the seedlings in time. For the field with de-fertilization trend, you can chase urea 4-5 kg, or spray 2% urea solution 2-3 times on the foliar surface, each interval 7-10 days, for the field with a long trend, available 15% paclobutrazol 40-50 grams per acre, sprayed 50 kg of water.
Third, cotton summer cotton in the management of fertilization should still master the principle of "applying sufficient base fertilizer, lightly applying seedling fertilizer, reapplying flower and bell fertilizer, supplementing the topping fertilizer", according to the fertilizer requirement of cotton, re-applying organic fertilizer, stable Apply nitrogen fertilizer, increase the application of phosphorus and potassium fertilizer, supplement the application of trace element fertilizer, and change the habit of not applying potassium fertilizer and micro-fertilizer.
Summer cotton fertilization should highlight an "early" word, especially the water and fertilizer after the wheat harvest is the key to the management of summer cotton seedlings, but the application amount should not be too much. Generally, 5 kg of urea, 40 kg of superphosphate, and 10 kg of potassium sulfate are applied, which is the basis for the early development of summer cotton. Flower bell fertilizer should be reapplied, mainly with quick-acting nitrogen fertilizer, about 15 kg of urea per mu, cotton field with low fertility or cotton plant growth. Flower bell fertilizer should be applied early in the early flowering stage, with higher fertility or strong cotton plant growth. In the cotton field, the flower and bell fertilizer should be applied at a suitable time. Generally, the flower and bell fertilizer can be applied when the 1-2 large peaches are stabilized in the lower part of the cotton plant. For cotton fields with weak growth or premature aging trend, top cover fertilizer should be applied, 2-3 kg of urea should be applied, or 2% urea and 0.3% potassium dihydrogen phosphate mixture should be sprayed on the foliar surface, but generally after August 10 No longer apply fertilizer.
4. Green onions and green onions are generally sown in the first autumn season in production, planted in the summer of the second year, and harvested before winter. The growth of green onions requires more nitrogen fertilizer, and more phosphorus and potassium fertilizers are needed in the later stage. The specific fertilization technology can be mastered:
1. The base fertilizer planting site applies 5000 kg of high-quality farmyard manure per mu, 50 kg of superphosphate, 100 kg of cake fertilizer as base fertilizer, and the planting of green onion is required to apply sufficient base fertilizer, which can apply 5000 kg of high-quality farmyard manure and 100 kg of phosphate fertilizer. It can be mixed and best, and can be mixed with 10 kg of urea and 10-20 kg of potash. The base fertilizer is ditched into the ditch, and the bottom of the ditch is deep, so that the dung is mixed.
2, topdressing onion can be applied in stages for 2-3 times, 10-15 kg each time. After the green onion is planted, it should be properly topdressed: the first top dressing will be carried out in early August, and the organic fertilizer will be 5,000 kg. Appropriate application of urea 10-20 kg, the second top dressing, carried out in late August, acres of urea 15-20 kg, cake fertilizer 50 kg, potash 5-10 kg, the third top dressing in early September, this time Green onions begin to grow vigorously, which is the key season for fertilizer and water management. Each acre can be used to apply 1000 kg of human excrement with water, and 15 kg of urea, 50 kg of phosphate, 5-10 kg of potassium, shallow soil, and fourth. The second top dressing is carried out after the end of September, and the urea is 15-20 kg of urea, and the high-altitude soil is watered. In addition, before and after the white dew, the foliar spray of 0.5% potassium dihydrogen phosphate solution is 50 kg per mu, and sprayed once every 7 days. , even spray 2-3 times, there is a significant increase in production.
5. Soybean soybeans have always had problems such as neglecting fertilization and extensive management, resulting in low soybean yield. In order to make soybeans break through in production, according to the characteristics of soybean fertilizer, several fertilization techniques are proposed:
1. Apply organic fertilizer to soybeans before planting 2-3 square meters of organic fertilizer per acre. Soybeans planted with wheat ridges or shovel can be applied to the soil at the seedling stage, combined with cultivating into the soil, so that Promote the growth and development of nodules and nodule formation.
2, topdressing and topdressing depends on soil fertility and soybean growth, generally in soybean seedling to branching stage, 5-8 kg of urea, 5 kg of superphosphate, 10-15 kg of ammonium phosphate, with 10 kg of chlorination Potassium is applied to the soil together and watered in time.
3, foliar fertilization for the growth of poor or lack of symptoms of the field to apply foliar fertilizer. Depending on the situation, after the flowering period of soybean, 2% urea solution and 0.3% potassium dihydrogen phosphate solution may be sprayed, or 0.5% ferrous sulfate solution or 0.2% zinc sulfate solution or 0.05% molybdenum may be sprayed. Ammonium acid solution.
Huaxian County Agricultural Products Inspection and Testing Center Chang Bili
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