How to apply fertilizer reasonably when planting lotus root?

How to apply fertilizer reasonably when planting lotus root? How much fertilizer does lotus root need to apply? We also ask experienced netizens to introduce the nutrients needed in the growth and development of lotus root, on the one hand, from the photosynthesis of lotus leaves, and on the other hand, from the soil, and the original fertilizer in the soil is limited (including base fertilizer). With the growth and development of the plant will be less and less, so it is necessary to fertilize in time. The planting network collates the three times of topdressing time of lotus root in the growing period and the matters needing attention of lotus root fertilization, which are listed in detail below for netizens' reference. For the first time, when the standing leaves began to appear, after ploughing and weeding, human manure and urine fertilizer was applied to 1000 kg per mu. The second topdressing was carried out when there were 5-6 leaves, and about 1000 kg of human manure and urine fertilizer was applied per mu. The third topdressing is carried out when the termination leaves appear, when the lotus root begins, which is called topdressing lotus root fertilizer. 1500 kg of manure and urine fertilizer and 30-50 kg of cake fertilizer are applied per mu. Matters needing attention for fertilization of lotus root: 1. Fertilizing lotus root should choose sunny and windless weather to avoid noon in the hot sun. 2. Release the field water before each fertilization, so that the fertilizer can be absorbed into the water, and then irrigate to the original depth. 3. In deep water lotus root field, fertilizer is easy to be lost, so liquid fertilizer can not be applied directly, so solid fertilizer should be applied. That is, re-apply stable manure and bury it in the mud. 4. When topdressing lotus root with chemical fertilizer, first of all, the chemical fertilizer and river mud are fully mixed to form a mass of fertilizer and mud, and then applied to the lotus root field. The reason why lotus roots grow only leaves but not lotus roots