Container seedlings and afforestation have become one of the main methods to match the afforestation of barren hills in the county. The average annual promotion of 50 million bags has not only effectively solved the problem of afforestation seedlings in barren hills, but also greatly improved the survival rate of afforestation. Through fifteen years of experiments, demonstrations, and promotion, the author summarizes the following points: First, nursery (a) nursery time: the end of March, the latest in late April to complete bagging and seeding to ensure that the seedlings for afforestation is more than one hundred days of age and high quality seedlings. Second, afforestation (a) afforestation time: the arrival of the rainy season can be carried out until September, the best rainy season. Our Dental Accessories Products is good in quality and competitive in price. We are manufacturer and supplier Dental Accessories Products following your specific requirement. We are looking forward to your E-mail and establishing cooperative relationship with you! We would provide professional Laboratory Tester with good services for you! Dental Accessories Dental Accessories,Oral Therapy Accessories,Dental Disposables Brushes,Micro Applicator Ningbo Cland Medical Instruments Co., Ltd. , https://www.cland-med.com
(B) the choice of nursery: Select leeward sunny, both close to the water, but also relatively close to the afforestation, a well-drained place as a nursery. Such as households nursery, can use the room before the house, idle space and roof and roadside. After the nursery is selected, it will be reduced to a number of small pods as a seedbed, and the husk should be kept flat.
(three) nursery method:
(1) Nutrition Soil Preparation: The selection of raw materials for nutrient soil is the key to the success or failure of Pinus tabulaeformis containers for seedlings and afforestation. The Pinus tabulaeformis is susceptible to blight, and raw materials must be strictly selected. The county’s experience is to use raw soil, lofty slopes or non-cultivated loess, which is free of germs. In order to avoid the soil being too viscous, one-third of the clean river sand may be blended, and the gravel or plant residues may be sifted and sifted. (Moisture content is handcuffed into groups, and loosening is preferred.) Seedlings in Chinese pine containers are contraindicated in the use of mature soil (cultivated soil) as raw materials, but they cannot even add organic fertilizers without decomposition. In addition, pine needles can promote the growth of Chinese pine, so it is better to use the soil of Pinus tabulaeformis as raw material. The raw materials required for the oriental seedlings of container seedlings are not stringent, but if the soil is borrowed on the spot, the whole bed is bagged and the soil still needs to be screened, and a suitable amount of decomposed organic fertilizer is added, and the mixture is fully stirred and 3% to 5% of sulfuric acid is used. Ferrous is sterilized.
(2) Bagging: Carry out the whole process. There are two issues to be noted when bagging: First, the bag must be filled, and the bottom pocket of the container is absolutely forbidden; second, the arrangement of the containers must be the same, and the top of the container is placed into a plane after each stack, so that the thickness of the cover soil can be consistent. Neat and tidy. A 40-centimeter trail (work lane) should be set aside between the seedbeds to facilitate nursery operations. The containers should be leveled first. There are two ways to put the cup, that is, the ground type: the bed is leveled, the container bag is discharged well, and each bed can be surrounded with soil or sand; the underground type: the seedbed is deepened into the same depth as the container bag or slightly larger than the container. The bag is flat and the bottom is flat, and the bag can be discharged inside the basket. Immediately after the container is placed, it is sown.
(3) Seeding: Before sowing, soak the seed with warm water (two open and one cool) for one day, remove and germinate with 0.5% potassium permanganate solution for 30 minutes to germinate, wash once a day with fresh water, 7-8 days of seed Cracked mouth, you can type (bagging and soaking germination must be matched). The following three kinds of key technologies need to be mastered. First, the seeds must be planted. The second is that the seeding hole must not be too small or too deep. The seeding rate should be 5 to 6 grains per bag. Otherwise, the seeds will squeeze each other, affecting emergence and even rot. Third, the cover soil should not be too thick. If the clay must be mixed with river sand, it should be covered with fine soil after sowing, and the thickness should be more than 1 cm from the container bag.
(4) Management: Management after sowing is a long-term task, and if it is overlooked, it can easily cause failure. According to the growth conditions of Pinus tabulaeformis and Platycladus orientalis, the management can be divided into two phases. Pre-earthing management, soaking seeds that do not germinate only about 15 to 20 days out of the Qi, germination of the seeds about 7 to 12 days out of Qi, the seeds before germination in the germination phase, need plenty of water, a certain temperature and air, pay attention to spray Water regulates the soil temperature to prevent the surface temperature from being too high and ensure that the seed is successfully unearthed. If there is a lack of water, cover can be used to reduce the number of water sprays. It is best to use cereal straw, followed by wheat straw. Plastic film coverage, although beneficial to warming and moisturizing, but easy to cause sunburn destroy seedlings. When the seedlings begin to emerge, the coverings are removed one after another and a 1% to 3% ferrous sulfate solution is sprayed prior to emergence. After the seedlings are unearthed, the number of water sprays should be appropriately reduced, and the water spray should be sprayed once every 3 to 5 days. In the event of serious damage to birds and animals, special personnel should be set up to provide day and night care. Drugs or iron anchors can be placed around the nursery to prevent them from entering nursery gardens during the rainy season.
(b) Afforestation methods: Water should be poured once before lifting. When raising the seedlings, the containers should be arranged in order, and the soil should be opened from one end of the seedlings, the container bags should be removed one by one, and gently loaded into the basket to be transported to the afforestation site. Do not shake off the nutritious soil or damage the seedlings. Seedlings destined for forested land can be placed in a cool place in the forested land if they are not planted for a time. In the rainy season and autumn of the year before afforestation, fine soil preparation is performed. Container seedlings are suitable for planting in small holes. When digging fish scale pits, the slope surface of the hole surface should be reversed from that of the original slope surface to increase the amount of rainwater interception. When planting seedlings, dig a pit a little deeper than the nutrient pod on the slope one-third of the pit bottom, put the container seedlings into the pit, fill in the fine soil around them, use down-to-earth, and plant the depth to the depth of the top of the container bag. Centimeter is appropriate. The small fish scale pit is planted with 1 nutrition cup per pit. Large fish scale pit planted two nutrition cups, to grasp the depth of planting and planting hole position, shallow or location by the pit outside the edge are unfavorable to survive, too deep or planted in the bottom of the pit is also easy to cause rain erosion.