Selection of good varieties and strong seedlings
The quality of the seedlings is related to fertilization and high yield of the forest. In the selection of good varieties should pay attention to the following points: First, different regions have different geographical adaptability, climate and ground conditions, should choose to adapt to the ecological conditions of other regions of the excellent strain; second is a multi-lineage cooperation, the oil tea heterogamous pollination fertilization rate is the highest, the best quality; third is the flowering period should be consistent, the flowering period and the immature period should be basically the same, in order to achieve a high efficiency of the sighting rate; fourth is the choice of container cup seedling 10cm high, the One-year good family seedlings 20cm high, two-year grafted seedlings 25cm high, stem thickness of 0.4cm, complete root system, no pests and diseases.
Scientific land preparation
Land preparation can effectively improve the soil, make the soil mature and loose, improve the soil water storage capacity and ventilation, accelerate the decomposition of organic matter in the soil, improve the microbial activity conditions, and improve soil fertility. The quality of land preparation directly affects the survival rate of oil tea plantation forest and the growth of trees. Especially in the shallow soil layer of the mountainous areas, land preparation can accelerate the weathering of rocks and soil maturation, increase the depth of the tillage layer, and help to store water and increase organic matter. Land preparation should be carried out one year or half a year before afforestation, preferably in the summer and fall of the first year.
Scientific planting
Whether oil tea can survive after planting is closely related to the planting season. According to the local climatic conditions, it is advisable to plant in the local seedlings stop growing or rainy period. Afforestation is generally carried out in mid-October to November or February to March, the effect is better. Afforestation is to rationalize the planting density. Generally planting 100-150 trees per acre, determined according to the terrain, to ensure good air permeability.
Scientific management
After planting, if there is a lack of plants or diseased plants, should be replanted with the same age of strong seedlings, and strengthen the management, so that the replanted seedlings and forest seedlings grow in balance. Young trees grow to 50 ~ 80cm, should be pruned in a timely manner to promote the germination of new branches, cultivate the canopy, for high-yield stable production to lay a good foundation of tree shape. Planting year does not require fertilizer, nitrogen fertilizer is mainly used for young trees, the application of phosphorus and potassium fertilizer in moderation, from small to large, increasing year by year. Young trees are weak in cold resistance, with many shoots and young tissues, which are very susceptible to frost damage. Therefore, in forest planning, avoid building gardens in low-lying depressions. In winter, it is necessary to build windbreaks properly, and in November, it is necessary to apply an appropriate amount of wintering fertilizer to keep warm. During the growth process, timely cultivation and weeding, regular spraying, protecting the tree crown, effective control of pests and diseases, enhance the plant's resistance to disease, so that it grows healthily.
The above is the focus of high-yield cultivation of oil tea, I hope to help you.