2. Choose a suitable planting site. The planting place should not be too dry or too wet. Before planting, you need to loosen the soil and bask in the sun for 2 days. Dry for 2 days, and you can bury litchi seeds about one index finger deep at night. Remember to water them sooner or later after planting. If the early seedlings don't need fertilization, they can be properly fertilized when they grow to 30CM height and grafted when they grow to 40-50CM height. You can graft any variety you like.
3. Fertilize scientifically according to each growth period. Soil fertility is different in each area of China, so fertilization should be adapted to local conditions, which can be roughly divided into two stages. 1 stage is mainly to promote plant growth, mainly to supplement nitrogen and some phosphorus and potassium elements. Fertilization at seedling stage can promote the root system to be stronger. The first fertilization began one month after planting. Within two or three years of seedling growth, scientific and reasonable fertilization can promote the growth of more new shoots, and the leaves of plants will gradually turn from red to green. For the second time, the leaves were promoted to increase the photosynthetic effect, and the new shoots grew rapidly, sprouting more branches and leaves, which was more conducive to the growth of new shoots. Fertilize reasonably according to soil conditions and seedling growth.
4. Irrigation. The drained young roots of litchi are few and shallow, which is greatly affected by the surface soil moisture. One-year-old young litchi trees often have the phenomenon of "withered back", so attention should be paid to watering and moisturizing in dry days, and attention should be paid to preventing water accumulation in tree trays in rainy days.
5. Pruning young litchi trees. 3-4 main branches should be cultivated in shaping and pruning, so that their incident angles are suitable and evenly distributed. The principle of pruning is that it should be light rather than heavy, mainly cutting off cross branches, too dense branches, bent branches, weak branches and ears that are not allowed to bear fruit, so that nutrients can be effectively used and the crown of the tree can be expanded.
6, weeding and pest control. Weeds should be removed in time to avoid competing with fruit trees for nutrients. Diseases and insect pests often occur after branches grow autumn shoots. In order to ensure that fruiting branches and autumn shoots are strong, preventive measures must be taken. This is a common pest, such as scarab, leaf roller moth, gall mite, stem borer and so on. To choose suitable pesticides, choose low-toxic pesticides and use them instead.
7. Protect trees from the cold. Prevent winter buds from sprouting after 1 1 month; The top of the young tree crown is covered with straw to prevent frost; Litchi orchard accumulates turf leaves, according to the forecast, smoke and prevent frost before frost comes; Cover the soil surface where the roots grow with green manure, crop branches and leaves or garbage, and then cover it with thin mud.