What is the NPK ratio for rice basal fertilizer?
The ratio of nitrogen, phosphorus and potassium in rice basal fertilizer is 2:1:1.2. Of course, soil fertility varies from region to region, so the amounts of phosphorus, nitrogen and potassium fertilizer should still be determined according to the phosphorus, potassium and nitrogen content in the local soil. In addition, when fertilizing rice, pay attention to the method, the amount and the timing of application. The details are as follows:
I. Rice fertilization techniques:
1. Pay attention to the method when fertilizing. First, when fertilizing, pay attention to the growth of the rice and judge whether fertilization is needed according to the different growth conditions. If you fertilize too early, it will cause excessive growth and an increase in useless rice seedlings, but if you fertilize too late, it is easy to cause malnutrition and many other problems, and at the same time the rice may collapse because it cannot adapt to such a level of fertility all at once.
2. Pay attention to the amount when fertilizing. This needs to be done according to the fertility of the paddy field and the growth of the rice. Usually, 8 kg of compound fertilizer or 6 kg of urea is used per mu. When fertilizing, try to use the spray method, and at the same time add a little washing powder to the fertilizer solution, which can prevent the fertility from evaporating.
II. Fertilization timing for rice
1. Base fertilizer: apply it to the soil before transplanting the rice.
2. Tillering fertilizer: apply it half a month after transplanting or planting the seedlings
3. Ear fertilizer: ear fertilizer is divided into flower-promoting fertilizer and flower-preserving fertilizer. The former is applied from the rachis differentiation stage to the spikelet differentiation stage, while the latter is applied slightly before the pollen mother cell meiosis stage.
4. Foliar topdressing: in the seedling field, topdress during the seedling growth period at the 1.5-leaf stage, the 2.5-leaf stage and the transplanting stage (three applications before transplanting).
When fertilizing rice, be sure to adapt to local conditions and act according to the specific situation. Do not blindly apply and copy methods, so as to avoid uneven growth, fertilizer damage and other situations.