First, the characteristics of sesame fertilizer The absorption and growth of sesame in the various growth stages are consistent with the trend of plant growth. From the total amount of nitrogen, phosphorus and potassium absorbed by plants, the flowering stage was the most abundant stage, and the flowering stage was the first to the flowering stage. At the same time, sesame also needs to absorb silicon, calcium, magnesium, aluminum, and iron from the soil. Sesame requires a large amount of fertilizer. For every 100kg of sesame seeds produced, 7-11kg of nitrogen, 2.5-3.8kg of phosphorus, and 5-11kg of potassium are required. Each increase of pure nitrogen 7.5kg/hm2, can increase production 3.75-75kg/hm2. Soils in northern China have low nitrogen content and low phosphorus content in the south. Only reasonable fertilization and farming can increase yields. Second, sesame fertilizer technology 1. Basal fertilizer: Fertilizer application plan for every 667 square meters (1 mu) with a target yield of 75 kg of sesame: 1500 kg of farmyard fertilizer, 15-20 kg of superphosphate, 3-4 kg of potassium sulfate or potassium chloride. Do not apply potassium fertilizer, the same below), urea 2-3 kg or ammonium bicarbonate 10-15 kg. For every 667 square meters, the target yield is 100 kilograms of fertilization program: 2000 kg of farmyard fertilizer, 30-35 kg of superphosphate, 4-5 kg ​​of potassium sulfate or potassium chloride, 4-5 kg ​​of urea, or 15 kg of ammonium bicarbonate. 1 kg of zinc sulfate or 0.2 kg of borax. Fertilizer application plan for a target yield of 125-150 kilograms per 667 square meters: 2000-2500 kilograms of farmyard manure, about 50 kilograms of superphosphate, 4-5 kilograms of potassium sulfate or potassium chloride, 5-10 kilograms of urea or ammonium bicarbonate 20 Kilograms, together with boron, zinc and other trace element fertilizers. If the content of organic matter in the soil is high, farmer fertilizers may not be applied, and base fertilizers may be directly used as corresponding compound fertilizers or other fertilizers. Applying proper amount of quicklime, plant-wood ash, etc. as base fertilizer on acidic soil can neutralize soil acidity and improve soil physical properties. 2. Seed Fertilizer: In general, every 667 square meters of rice bran will produce 5-8 kilograms of cake fat, 2 kilograms of bone meal, 2 kilograms of urea, and 500 kilograms of soil miscellaneous fertilizer. Each kilogram of seed needs to mix 1 g of ammonium molybdate or rare earth. When sowing, first dissolve the ammonium molybdate in a small amount of water, or dissolve the rare earth in acidic water, then wet the seeds in the container or spray while mixing, and mix well and dry before planting. 3. Dressing (1) Dressing at the seedling stage: The top dressing at the seedling stage is preferably treated with a trench. In the case of thin soil, insufficient basal fertilizer, and thin seedling growth, a small amount of seedlings may be topdressed to dilute the decomposed human urine or urea. Fertilizer seedlings should be carried out after the fixed seedlings, branching varieties before branching, single-spreading varieties before budding, available urea 2.5 kg per 667 square meters or 1500-2000 kg of human and animal waste. If the soil is fertile, the basal fertilizer is sufficient, and the seedlings grow robustly, no fertilizer may be applied at the seedling stage. (2) budding early flowering topdressing: flowering top dressing 1-2 times, if the soil is good for fertilizer and fertilizer, it can be topdressed once at the early flowering period; otherwise, it can be applied twice at the budding flowering stage, flowering and sowing period. Supplementary facilities 1 time, it is sooner rather than later. Generally, 6-8 kg of urea is applied per 667 square meters, or 15-25 kg of ammonium sulfate, or 15-35 kg of ammonium bicarbonate, or 2000-2500 kg of human and animal waste. The boron-deficient land should be supplemented with boron fertilizer. In addition, about 667 square meters of ash can be applied every 667 square meters of sesame, or about 10 kg of potassium chloride. (3) Finishing and dressing during flowering and pod-dressing: It is effective to apply the appropriate amount of available nitrogen fertilizer and phosphate fertilizer. Each 667 square meters topdressing ammonium sulfate, superphosphate 7.5 kg, can increase production by 30%. It is advisable to apply the fertilizer at this stage sooner rather than later than the flowering stage at the latest; if the fertilizer is too late, in case of rainy weather, it is easy to cause late-maturing lust and increase the disease. Therefore, in order to give full play to the role of fertilizer production, sesame dressing should be combined with field management such as cultivating, soil-cultivating and watering. (4) Foliar application: Foliar application of boron, phosphorus, and potassium fertilizer can significantly increase sesame yield. Spraying 1%-2% urea solution or 0.1%-0.5% potassium dihydrogen phosphate 1-2 times during the initial flowering stage and early flowering stage has obvious effect on yield increase; 0.1% boron fertilizer and 0.3% dihydrogen phosphate are sprayed on the foliage during flowering period. Potassium mixture can increase the grain weight; sesame is more sensitive to manganese fertilizers, commonly used manganese fertilizers include manganese sulfate and EDTA chelate fertilizer, and the spraying effect is better in 7-10 days before budding; iron fertilizer is mainly sulfuric acid. Iron or chelated iron fertilizer, the application of iron fertilizer to foliar spray is appropriate, the common concentration of 0.1% -0.5%. Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone High Potential Therapy Machine
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