Hello: What fertilizer is better for planting Camellia oleifera in yellow soil mountainous area?

1, fertilization of young Camellia oleifera forest

Fertilization of young forest should be based on decomposed organic fertilizer, and the principle of combining quick-acting fertilizer with slow-acting fertilizer and combining organic fertilizer with inorganic fertilizer should be adhered to in order to obtain better fertilization effect.

Camellia oleifera can be planted without fertilizer in that year. If conditions permit, after the seedlings are restored in June and July, some rare human manure can be properly poured, or 25-50g urea or special fertilizer can be applied to each plant. After that, Israel Woye quick-acting nitrogen fertilizer (0. 1 ~ 0.3kg/ plant) was applied about half a month before the new buds germinated in March every year to meet the needs of germination, flower bud differentiation and fruit growth. 1 11in early October, soil mixed fertilizer or manure was used as overwintering fertilizer, and each plant was 5 ~ 10 kg. With the growth of trees, the amount of fertilization increased year by year.

Young Camellia oleifera trees are vulnerable to freezing injury. Sufficient warm winter fertilizer should be applied in June 5438+065438+1October, and foliar fertilization with Israeli Woye ionic potassium dihydrogen phosphate solution can be carried out in June 5438+00 ~1October according to the growth of branches, so as to facilitate wintering.

2. Fertilization of Camellia oleifera forest

The reasonable ratio of N, P and K should be used in the fertilization of Camellia oleifera in full fruit stage, and the general ratio of N, P and K is 10:6:8. Fertilization should master several principles: fertilization in the mountains, fertilization in the trees, fertilization in the seasons. Generally, nitrogen fertilizer and appropriate amount of potassium fertilizer are applied in early spring, and soil miscellaneous fertilizer and organic fertilizer are applied in winter to stabilize fruits and prevent cold; Fertilization should be carried out in different years according to the situation, and more nitrogen and phosphorus fertilizers should be applied every year; Fertilization is to determine the type, collocation and dosage of fertilizer according to the specific situation.

Apply quick-acting fertilizer or special fertilizer in March, 0.5 ~ 1 kg per plant; In June 165438+ 10, soil mixed fertilizer was applied, and each plant15 ~ 20kg; The suitable fertilization depth is 0.2 ~ 0.3m On the basis of topdressing, a proper amount of foliar fertilizer can be applied, which is mainly composed of trace elements, potassium dihydrogen phosphate, urea and various growth regulators, and should be carried out in the morning or evening.

3. Transformation and fertilization of Camellia oleifera low-yield forest

Mainly based on farm soil and miscellaneous fertilizers, combined with winter reclamation. Apply some compound fertilizers mainly containing nitrogen and phosphorus in conditional spring.

4. A fertilization method for Camellia oleifera

Camellia oleifera root system is developed, and the absorption roots are mainly distributed in the soil layer of 5 ~ 30 cm, and the area near the crown projection is dense, so the root system growth has obvious tendency of water and fertilizer.

According to the characteristics that the horizontal absorption roots of Camellia oleifera are mostly concentrated at the tips of lateral roots, a circular ditch or hole with a depth of 20 cm and a width of 20 cm is generally dug along the protruding inner edge of the crown, and fertilizer is directly applied into the fertilization ditch, mixed with subsoil and covered with backfill soil; In the future, the position will be changed year by year, and the fertilization ditch will be deepened and widened appropriately to promote the increase and development of the root system absorbed by Camellia oleifera. In areas with steep slopes, dig a half-moon or rectangular ditch above camellia oleifera and apply fertilizer in a similar way.

5. Matters needing attention in fertilization of Camellia oleifera.

In the process of fertilization of Camellia oleifera, the following points should be paid attention to:

(1) Grasp the properties of fertilizers and do not mix them casually. Acid fertilizers such as superphosphate and ammonium bicarbonate should not be mixed with alkaline fertilizers such as plant ash, fireclay ash or lime to avoid losing or delaying fertilizer efficiency.

(2) Give priority to organic fertilizer, use chemical fertilizer appropriately, improve the soil structure of forest land and keep it in good condition.

③ Fertilization should be combined with reclamation, tending and pruning, and soil and water conservation should be done well to give full play to the role of fertilizer.

④ Applying the mixture of superphosphate and organic fertilizer after composting has higher fertilizer efficiency.

⑤ Top dressing outside roots is not suitable for high temperature, drought or rainy season, which may easily lead to withering of branches, shoots and leaves, or lose or reduce fertilizer efficiency, and waste investment.

⑥ Human and animal manure must be fully decomposed before it can be used.