Fertilization, principle, crop roots, strong
In general, the growth and development of crop roots is shallow and deep, from near to far, and the ability to absorb nutrients is weakened and weakened. Therefore, the fertilization method should be carried out according to this law. The application of the base fertilizer combined with seed fertilizer and topdressing in the practice of fertilization not only meets the nutrient requirements of different growth stages of the crop, but also adapts to the laws of root growth and development. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone YT-M95 YT-M95 Shenzhen Sunshine Technology Co.,Ltd , https://www.shenzhenyatwin.com
The depth of roots of different crops is different. Most of the dicotyledonous crops such as cotton, soybean, alfalfa and other straight root crops have deeper root depth than monocotyledonous crops such as gramineous root crops. Deep root crops should be deeper than shallow root crops. Because the root system absorbs nutrients, the seedling stage is weak, the medium-term is strong, and the later stage is weakened. Therefore, the water-soluble fertilizer should be used as the seed fertilizer and the surface fertilizer in the seedling stage, and the water-soluble fertilizer can be used for the foliar spraying in the later stage.
The depth of distribution of plant roots indicates that plants absorb nutrients not only from the topsoil but also from the subsoil. Root density refers to the total length of the roots in a unit of soil volume. It indicates how much soil volume supplies nutrients to the roots. The high density of roots indicates that the effective space for supplying nutrients is large. Different crop roots have different ability to absorb insoluble phosphorus. For example, radish, rapeseed, buckwheat and other crops have strong ability to absorb insoluble phosphorus, and gramineous crops have weak ability to absorb insoluble phosphorus.
In summary, crop fertilization should be principled, can not be blindly fertilized, can not be violated theoretical fertilization, use different fertilization methods and links, so that crops can more effectively absorb nutrients and promote increased production.