Cultivation and Management techniques of Pinus elliottii how to grow Pinus elliottii seedlings

Pinus elliottii is a kind of tree species that likes light and fertilizer, which is more common in Shanxi and other places in China. White bark pine has a certain economic function and medicinal value, so it is deeply loved by the majority of consumers. Now many people want to plant this kind of tree, not before planting, everyone must want to have a comprehensive understanding of its planting method.

Cultivation and Management techniques of Pinus elliottii

1. Nursery site selection: nursery land with good drainage, irrigation conditions, flat terrain, deep sandy loam or loam, heavy rootstock soil, saline-alkali soil or low-lying stagnant water can not be selected as seedling land.

2. The seedlings of Pinus elliottii grow slowly and should be planted densely. If we need to continue to cultivate large seedlings, we have to transplant 2 or 3 times before planting. The two-year-old seedlings can be transplanted with soil before the terminal buds germinated in early spring, with a row spacing of 20 to 60 cm without harming the terminal buds, watering twice after planting and watering again after 6 to 7 days. The seedlings of 4 to 5 years old can be transplanted for the second time with soil balls, and the row spacing is 60 to 120 cm. After survival, it is necessary to keep the soil around the roots loose, apply 100 to 120 kg of rotten organic fertilizer per plant, pour water through the soil after burying the soil, and then strengthen management, promote growth and cultivate strong seedlings.

3. Seedling management: after sowing, the seedlings are unearthed with seed shells and fall off in about 20 days. during this period, birds should be prevented, the seedlings should be buried in the soil to prevent cold, and the bare roots of 2-year-old seedlings should be transplanted. It is best to plant as they are dug and watered after planting. Seedlings should be closely planted, large seedlings should be sparsely planted, and soil should be taken for the second transplant or afforestation in about 5 years.

How to plant Pinus elliottii seedlings

1. Seed treatment: Pinus bungeana seeds have a long dormancy period and should be soaked in Bordeaux solution for disinfection. Before sowing, seeds are soaked in warm water (50 ℃ to 60 ℃) or stratified with mixed sand. Seeds can be sowed when the number of grinning seeds reaches 50% of the total number of seeds. It can also be accelerated by low temperature stratification and high temperature every other year, and sow when 40% of the seed coat is cracked.

2. Sowing method: sowing in spring is often adopted, and sowing within 10 days after soil thawing is the most suitable. White bark pine is afraid of waterlogging, so it should adopt high bed or high ridge to raise seedlings, pour sufficient bottom water before sowing, strip sowing, sowing amount is 70,100kg / mu, orange soil thickness is 1cm 1.5cm after sowing, and wet saw powder of 1cm can be used for heat preservation and moisturizing.

Fertilization skills of Pinus elliottii

The main results are as follows: 1. The fertilization of Pinus elliottii should start from the seedlings, which should be based on basal fertilizer and supplemented by topdressing. Fertilizing for the first time from March to April, from the middle of May to the end of July, topdressing 2 to 3 times, mainly nitrogen fertilizer, applying 3 piculs of rotten human manure or pig manure per mu, adding about 20 piculs of water, 5 to 15 kilograms of mature cake fertilizer per mu, about 15 piculs of fertilizer and water per mu, and about 4 kilograms of urea per mu.

2. Stop applying nitrogen fertilizer in the later growth stage, increase phosphorus and potassium fertilizer to promote the Lignification of seedlings, and spray leaves with 0.3% to 0.5% potassium dihydrogen phosphate solution.

Common diseases and insect pests of Pinus elliottii and their control methods

1. Loose needle disease. Control methods: to control pine needle disease, it is necessary to strengthen the management of water and fertilizer in the nursery, strengthen the tree potential, control other diseases and insect pests in time, and cut down weak and dying trees. Before the peak of sporozoite emission in spring and summer, spray 1purl 100 Bordeaux solution, 50% acetaminophen 500-800 times, 70% dimethoprim 500-800 times, 65% zinc 500 times, 45% desenamide 200-300 times. 621 smoke agent and chlorothalonil smoke agent can be applied in closed young forest or seriously ill adult forest.

2. Pine needle red orange disease. Control methods: strengthen woodland management, enhance tree potential, improve tree disease resistance, remove weeds under the forest in time, enhance the drainage of woodland, and avoid excessive humidity of woodland. Drug control can use 25% carbendazim or 75% chlorothalonil wettable powder 500 times liquid spray.

When planting Pinus elliottii, we must do a good job of site selection, and then plant it at the right time. After planting, we still need to strengthen the management, and we must pay attention to the skills when fertilizing. Pinus elliottii is also vulnerable to diseases and insect pests, so it is also critical to do a good job of prevention and control in this area.