Technical points of mechanical fertilization

       Plow bottom fertilization At the same time as cultivating land, the plow bottom fertilization machine is used to apply basal fertilizer deeply.Technical points: the depth of fertilization is 10 to 25 cm; the width of the fertilizer belt is 3 to 5 cm; the fertilizer discharge is uniform and continuous, without obvious breaks; the amount of fertilization meets the agronomic requirements of crop cultivation.

　　The deep application of fertilizer planting mainly uses fine-sowing fertilizers and ditch-sowing fertilizers to complete the fertilization, covering, and suppression operations at the same time as sowing. According to the relative position of the fertilization and the seeds, there are side-position deep application and positive-position deep application. The side-position deep application of fertilizer is applied below the side of the seed, and the positive-position deep application of fertilizer is applied directly below the seed.Technical points: complete the planting, fertilizer sowing, etc. according to agronomic requirements.There is a soil isolation layer of a certain thickness (greater than 3 cm) between the seed and fertilizer, which not only meets the nutrient needs of crop seedling growth, but also avoids the phenomenon of burning seeds and seedlings when the seed and fertilizer are mixed; the width of the fertilizer belt is slightly greater than the width of the sowing; the fertilizer strips are uniform and continuous, without obvious broken strips and missed application; the soil tillage depth is consistent.The soil is broken and the fields are flat, and the reality is appropriate.

　　Deep application of top dressing mainly uses top dressing machines, cultivators, fertilizers and other machinery to carry out fertilizer application in all growing stages (main links) of crops.Technical points: The amount of fertilization should meet the nutrient needs of the crop in each growing period; the depth of fertilization is 6 to 8 cm; the fertilization site is generally below the root system of the crop, try to avoid hurting the root system of the crop; the width of the fertilizer belt is 3 to 5 cm, and the fertilizer discharge is uniform and continuous, with no broken strips leaking.