High-yielding Cultivation Techniques of Toona sinensis

In recent years, with the popularization of plastic greenhouse vegetable production, planting content in sheds has also continued to increase. In addition to large quantities of vegetables such as cucumbers, peppers, and tomatoes, the production of grass and woody trees and fruits has also broken into the greenhouses and has produced high economic benefits. Liaocheng City, Shandong Province has succeeded in producing camphor buds using ordinary plastic greenhouses. It has less investment, quick effect, easy promotion, high efficiency, and yield over RMB 10,000 per mu. Now its cultivation techniques are described as follows: 1. Nursery stock cultivation 1. Seed the loose and fertile land at the end of March and apply enough base fertilizer. Applying a small amount of urea per acre is about 2000 kilograms of manure, and tilling is even after cultivation. In the north-south direction, the seedlings are about 1 meter wide. Within the centipede, about 2 centimeters (3 to 3 centimeters) wide shallow grooves are formed within 20 centimeters. The new Toona sinensis seeds were finned, soaked in warm water at 40°C for 10 hours, rinsed repeatedly with fresh water, mixed with 1:1 volume of fine sand, and then spread evenly in the open shallow ditch. Mu uses about 3 kilograms of pure seeds. 2. Seedling management When the seedlings grow 2-4 shoots of true leaves, the seedlings are weeded and the seedlings are kept at a spacing of about 15 cm, and about 20,000 are left. At the same time, water and fertilizer management will be strengthened and foliar spray will be applied. Watering is stopped during the rainy season. In late August, 100-milligram Bq is sprayed 1-2 times to promote the capping of seedlings, form full-filled top buds and well-developed axillary buds, and cultivate good quality seedlings. Second, build a shed and transplanting 1. Build a shed using an ordinary vertical plastic film solar greenhouses, 8 meters wide from north to south, 40 meters from east to west, the wall built with soil, the back wall is 2 meters high, 60 cm thick, The ridge height is 2.4 meters and the wall thickness is 80 centimeters. In the shed, cement pillars were used as scaffolds and squats. The bamboo slopes were used as beams for the front slopes of the sheds, and the 8th wire was used as a “string” to cover ordinary polyethylene films and cover rice straws at night. Shed with corn stalks and straw stubs on the back slope of the shed, protected against heat and cold. 2. Seedlings transplanted into November, the natural deciduous citron seedlings were graded for use. In the shed, a 1.2-meter-wide north-south-to-west paddy field, 100 kg of soil-fertilizer and 0.6 kg of high-quality urea per pound are used. Deep-turn 40 cm to fully mix the soil and fertilizer. According to the order of nursery stock, the seedlings were planted from low to high and then planted in a uniform manner from south to north. About 100-150 seedlings were planted per square meter and 20-60 seedlings were planted more than two years old. If the seedlings are tall, over or close to the roof, they should be planted from north to south, high to low, and then northward. The depth of planting can be reduced to the depth of the original burial, and once the transplant is completed, it is poured once. Third, the shed management and picking 1. Shelter management According to the test, when the relative humidity within the shed reached 70%, the temperature reached 18 °C, the top buds began to germinate, accelerated growth at 30 °C. Therefore, every day from 9 to 10 am, we should roll up the grass on the front slope and cover grass weeds from 3-4 pm to maintain proper temperature and humidity in the shed. Snow cover should be timely cleaned when snowing, to prevent damage to the shed body. 2. About 50 days after the shoots are planted into the shed, the top buds can grow to about 20 cm. At this time, the first shoots can be taken. Usually, only the terminal buds are harvested for the first time and removed altogether to promote the sprouting of axillary buds. After picking, timely fertilization and watering shall be applied, and 0.3 kg of urea shall be applied for each pod. In the later period, when the buds grow to 15 cm, picking begins. At the same time, the basal part of the bud retains 1-2 leaves, promotes regeneration of sprouts, and immediately performs fertilizer and water management. Picked citron buds should be spread damp and cool, avoid packing along with the package with plastic bags, to prevent buds off the leaves, reduce bud quality. 4. Seedlings processing After 3-4 times of picking, the nutrients stored in the seedlings of the saplings were basically consumed, and the re-emergence of the buds was of poor quality and low yield. The benefit was not satisfactory. At this time, it is generally until mid-April this time. The sassafras seedlings should be promptly ventilated and then moved to the ready-to-prepare seedbed outside the shed to strengthen the management of fertilizer and water, and to cultivate perennial quality seedlings to be recycled into the shed for production. It is more kind of other crops.

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