Fertilizing Techniques for Autumn Sown Crops

Right now, it is the best time for fertilization in autumn sowing crops. Adapting local conditions to the requirements of balanced fertilization in autumn sowing crops to do a good job of fertilizing the autumn sowing crops is a key measure for the quality and high yields of autumn sowing crops. Autumn crops fertilization should grasp the following five major technical points: 1. Comprehensive increase of organic fertilizer: per acre to ensure the application of organic fertilizer 1500 kg or more, to the combination of land use, land and fertilizer to increase production of two benefits. Note: Before the application of organic fertilizer should be fully stacked and cooked. 2. Scientific application of chemical nitrogen fertilizer according to local conditions: At present, the commonly used varieties of chemical nitrogen fertilizer are ammonium bicarbonate, urea, and ammonium chloride. However, it should be noted that ammonium ammonium bicarbonate such as ammonium bicarbonate, ammonium sulfate, ammonium chloride, ammonium phosphate, etc. should not be mixed with calcium, magnesium phosphate fertilizer, grass ash, lime and other alkaline fertilizers, otherwise it will produce ammonia volatilization and reduce the effect of fertilizer; use urea as Fertilizer fertilizer should not be directly contacted with seeds, and control the amount of application, not more than 2.5 kilograms per acre, because urea contains diuretic urine, the concentration is too high will make the seed poisoning, affecting seed germination; ammonium bicarbonate should not be applied to the surface too For a long time, do not apply lightly, apply immediately after application of soil or appropriate deep application, due to the nature of ammonium bicarbonate is extremely unstable, it is easy to volatilize, so that the loss of nutrients; all nitrogen fertilizer should be used in conjunction with phosphorus, potash. 3. Make good use of special compound (mixed) fertilizers: Special compound (mixed) fertilizers contain various nutrient elements such as nitrogen, phosphorus, potassium, micro and so on needed for the growth of crops. Compared with simple fertilizers or conventional fertilization, the yield can be up to 10 %-15%. Become the fertilizer of choice in autumn sowing production. 4. The correct choice of potassium dihydrogen phosphate: potassium dihydrogen phosphate is a high concentration of high quality and excellent quality of phosphorus, potassium 2 yuan efficient compound fertilizer, commonly applied to wheat, rape and other autumn sowing crops. Potassium dihydrogen phosphate can be used as base fertilizer, but also as top dressing. When used as base fertilizer, according to the autumn crops, the amount of 7.5-10 kg per acre, and with nitrogen fertilizer application; top dressing is mainly sprayed, can be carried out from the seedling stage to the middle and late stage of the crop, spray concentration of 0.4% -0.5%, That is, every 50 kilograms of water against the potassium dihydrogen phosphate 0.2kg-0.25kg, required to be fully dissolved, with the use of the match, and according to the seedlings to control the number of spray, spraying 2-3 times can be. 5. Targeted application of boron, molybdenum, zinc and other high-quality micro-fertilizers: in the autumn sowing crops, rape, fruit trees, etc. are boron-loving crops and are very sensitive to boron. Although the demand for crops is minimal, they can generally receive the finishing touch and icing on the cake after application. Borage of rapeseed, fruit trees, etc. are generally applied to basic facilities, 0.5-1 kg per mu, but also can be used foliar spraying, 0.1-0.2 kg of boron fertilizer for mu, spray 40-50 kg of water, and wheat seed dressing is generally used for seed dressing. That is, one acre seed can be seeded with 12 grams of molybdenum, and zinc can be directly applied with 1-1.5 kg of zinc fertilizer as base fertilizer.