China's water-soluble fertilizers have developed rapidly in recent years, and the fertilization technology has been continuously improved. A small number of times is the most important fertilization principle of water-soluble fertilizers, which is consistent with the characteristics of uninterrupted absorption of nutrients by plant roots, which can reduce the leaching loss caused by one-time large-scale fertilization. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone fresh Chinese Frozen Pomfret Fresh Pomfret,Fresh Frozen Pomfret,Delicious Fresh Pomfret,Delicious Fresh Frozen Pomfret Zhoushan Junwei Aquatic Products Co., Ltd. , https://www.junweiaquatic-intl.com
Water soluble fertilizers are usually applied, drenched or applied by irrigation equipment. Especially under drip fertigation conditions, the roots grow densely and in large quantities. At this time, the dependence on soil nutrient supply is reduced, and more depends on the nutrients provided by drip irrigation. There is a higher requirement for a reasonable proportion and concentration of nutrients. If the formula is not balanced, it will affect crop growth.
In terms of the amount of irrigation, it is generally necessary to keep the depth of the root layer moist. The depth of the root layer varies greatly depending on the crop. You can use the shovel to dig the soil at any time to understand the specific depth of the root layer. Excessive irrigation not only wastes water, but also seriously drains nutrients below the root layer, wastes fertilizer, and reduces crop yield. In particular, urea and nitrate nitrogen fertilizers are extremely easy to lose with water. When applied in combination with other fertilizers, the water-soluble fertilizer is usually only used as a top dressing. Do not use water soluble fertilizer instead of other fertilizers, use them together, reduce costs, and take advantage of various fertilizers.
When fertilizing, pay attention to the following three methods: First, when drip fertigation, first drip the water, and then start fertilizing after the pipeline is filled with water. Immediately after the end of fertilization, the water is dripped for 20 to 30 minutes, and all the residual fertilizer in the pipeline is discharged. Secondly, long-term drip fertilization in greenhouses or greenhouses will cause accumulation of surface salt and affect root growth. Under-film drip irrigation can be used to inhibit salt migration to the surface layer. Third, pay attention to the uniformity of fertilization. In principle, the slower fertilization is better. Especially for elements with poor mobility in the soil, prolonging the fertilization time can greatly improve the utilization of difficult-to-move nutrients.