Eucalyptus planting techniques: Eucalyptus cultivation and management methods

The planting network has sorted out the key points of eucalyptus cultivation, which are listed below for netizens' reference and study. 1. Selection of eucalyptus woodland: afforestation land should be located in hills, platforms, plains and lower parts of low mountains with deep soil layer, loose soil, good drainage, high fertility and convenient transportation below 25 °slope. In addition, eucalyptus has specific requirements for meteorological factors, the general low temperature is not more than-5 ℃, otherwise it is vulnerable to freezing damage. 2. Cleaning of woodland before planting: before afforestation and land preparation, we should split grass and refine the mountain, clear the woodland, dig out miscellaneous irrigation heads and five-section mango heads, pay attention to fire prevention and soil and water conservation during mountain refining, and dig holes in time after mountain preparation in order to reduce ash loss. The clearing of forest land should be completed before July-September of the year before afforestation. 3. Remove termites from woodland: from September to October of the year before afforestation, drop mirex, 225,400 packets per hectare, evenly put in the afforestation land in the shape of "product", put more around the afforestation land, dig 10-15cm deep pit, spread thin layer of withered grass, put 1-2 packets of medicament into the bag, and cover the soil with compaction. The control effect of planting on the afforestation land without land preparation is the best, and the soil preparation should be carried out one month after the drug is released. If it is not controlled in time before afforestation, mirex can also be released in April of the year of afforestation, but carbofuran protection must be applied in the root zone during afforestation. 4. base fertilizer of eucalyptus: applying base fertilizer is an important measure to build high-yield eucalyptus forest. Because of the general lack of phosphorus in the soil in Fujian Province, the long-term calcium magnesium phosphate fertilizer should be selected as the base fertilizer. 500g was applied to each hole when it was returned to the topsoil about a month before afforestation. 5. Eucalyptus planting density: according to the density test and investigation and analysis, the planting density of eucalyptus is 1650-1800 trees / hm2 (110120 plants / mu). In order to make full use of the growth characteristics of eucalyptus favorite side light, the row spacing of wide rows and narrow plants is adopted, and the planting holes are generally arranged in 2 × 3m. 6. Eucalyptus planting methods and matters needing attention: (1) in order to ensure the survival rate of seedlings, it is recommended to raise seedlings in situ and plant them in situ, so as to avoid damage to seedlings caused by long-distance transportation of seedlings. (2) the afforestation season should be carried out on cloudy or light rainy days from February to March. (3) Seedling raising and transportation: first-class seedlings should be selected for afforestation. One night before loading and transportation, 0.3% compound fertilizer should be sprayed through the container and should be placed in a cool place when transported to the woodland; nutrition cup seedlings should be soaked or soaked in water before going up the mountain for afforestation, and the seedlings that cannot be used on the same day should be drenched and moisturized in the shade shed. (4) afforestation and planting: when planting, peel off the container or plastic film bag, press the container with both hands before tearing the bag, and all the bags should be torn out, not only the bottom but not the edge. When planting compound soil, it should be pressed from all around and put an end to vertical pressure, so as to prevent damage to container soil. When planting, we should be careful not to plant the seedlings on the base fertilizer, so as not to make the roots of the seedlings come into contact with the fertilizer and affect the survival. Secondly, when planting, we should also pay attention to relaxing the root and pressing, so that the root of the seedling can be closely combined with the soil, the planting depth is generally deeper than the original root 2cm or so, and the tall seedlings should be planted properly, so that the roots and roots can not be suspended and affect the survival. 7. Insect control measures of eucalyptus: the roots of eucalyptus seedlings are young and tender, and white ants, crickets and small land tigers will do harm to them. It is especially serious within 3 months after afforestation. Insect control often becomes the key to the success or failure of afforestation. If insect control is neglected, it may lead to the scrapping of the whole small class. Control methods: first, clean the mountain thoroughly, remove the grass root, especially the root of the mango bone, pick up the grass root to cut off the food source of the termites; second, apply carbofuran (usually not overnight) while afforestation. 1/3 to 1/2 tablespoons (about 5g) per plant, pay attention to close around the rhizome when applying, the application range is wide, but the effect is poor. Third, release mirex before or after afforestation according to the active season of white ants. 8. Daily management of eucalyptus: (1) Young forest tending and afforestation in summer and autumn to remove weeds and loosen soil twice, and to expand holes, dig deep 30cm, bandwidth 1.0m, weeding and loosening soil again in the early spring of the next year, but we should pay attention not to accumulate weeds in the rhizome of eucalyptus trees in order to reduce the harm of termites. From the first three months to half a year after afforestation, eucalyptus seedlings do not have the ability to compete with weeds and are covered by weeds, especially during the Spring Festival afforestation. The first two months are the vigorous season for the growth of weeds, so weeds should be weeded once in time, and weeds and loosen the soil again before the weeds mature from August to September. In the second year, it is necessary to carry out 1-2 times of tending, mainly expanding holes, loosening soil and weeding. After two years of tending and management, the young forest can be closed. (2) topdressing in time is very important for stand growth. Topdressing should be applied 1-2 months after planting (when the seedling height is about 0.7-1.0m), compound fertilizer and urea 50g/ plants (can also be spread in rainy days, 50g/ plants), compound fertilizer and urea 100g/ plants should be applied from July to August. In the early spring of the second year, combined with weeding and loosening the soil, topdressing was applied again, and urea and compound fertilizer were applied to each hole. When fertilizing, we should pay attention to the following points: first, fertilize according to the soil nutrients, water texture, air, pH and other characteristics of woodland and topographic conditions, and remove weeds before each fertilization. Second, when applying fertilizer, ditches should be opened and buried deep in the back slope of the hole to reduce fertilizer loss. The third is to apply fertilizer after rain to accelerate fertilizer dissolution and reduce fertilizer leaching. Fourth, the barren areas such as ridges and the middle and upper slopes should be applied more, while fertile soil such as ditches and valleys should be applied less. (3) if the cultivation goal of tending thinning is short-cycle industrial raw material forest, it is not necessary to carry out tending thinning because of its high management intensity and short mature period, but the diseased plants and wind-broken trees should be cut and cleared in time. If large diameter wood is cultivated, 1-2 times of tending thinning can be arranged, that is, 70 trees / mu can be cut 3-4 years after afforestation until 6-7 years later, or the second thinning can be retained to 30-40 trees / mu to cultivate large diameter wood. 9. Eucalyptus sprouting cultivation: 1. Sprouting season: eucalyptus can sprout after felling in four seasons, and winter and spring is the best regeneration season in the southeast coast. The sprouting rate of tree stumps cut down in summer and autumn rainy season is slightly lower, and the growth of budding strips is poor. Therefore, it is advocated to cut down sprouts in winter. 2. Tidying up sprout strips: timely sorting out sprout strips is the key to bud renewal. The first arrangement of sprouting strips should be carried out 3-6 months after clear cutting, when the sprouting strips are as high as 1.5-2m. Because of the obvious differentiation between the strong and the weak at this time, we can take the method of removing the weak and retaining the strong, leaving 3-4 trees per stump, and then finishing for the second time after 1-1.5 years of cultivation, and finally leave 1-2 fast-growing and sturdy plants in the southeast part of the cutting root. When sorting out sprout strips, it should be combined with density investigation, and it is appropriate to keep 1800-1950 plants per hectare. 3. Tending and fertilization: in order to promote the rapid growth and rapid growth of budding forest, grow earlier and increase yield, tending and fertilization should be strengthened. The cutting land is generally more rigid, and the woodland should be loosened and nurtured after clearing, so that the soil can be loose and ventilated, and the surface water evaporation can be reduced, which is beneficial to root sprouting and tree growth. In the second year, loose soil tending can be carried out in combination with plant setting. Fertilization is best carried out before sprouting after cutting, using ditch application, each plant applying phosphate fertilizer or nitrogen, phosphorus and potassium compound fertilizer 1-1.5kg (200-300kg per hectare) can also be applied urea, under suitable conditions, it is best to mix with organic fertilizer, and the best fertilization season is from April to July, because sprouting strips grow most rapidly, need the most nutrients and absorb the most quickly, and significant results can be obtained after fertilization. Click to get more eucalyptus planting techniques click to get more flower planting techniques