Change traditional bitter gourd planting methods

To change the traditional way of bitter gourd planting, you can choose the bitter gourd rather than high temperature and not cold, so the winter greenhouse production has brought some difficulties. In recent years, some regions have adopted the grafting technique to cultivate bitter gourd in the solar greenhouse, which can enhance plant disease resistance, make it safe for winter, and get listed early. The yield per mu can reach about 3,000 kilograms, and higher economic benefits are achieved. The cultivation techniques are summarized below. Blue Mountain Bitter Gourd was selected, and black seed pumpkin was used as rootstock for good affinity, strong cold resistance and high yield. 1. Seed treatment: bitter gourd seeded in early October, soaked with 50-55°C hot water before sowing, keep stirring and replenish hot water, keep the water temperature at this temperature for 15-20 minutes, and continue to soak the bitter gourd seeds after stirring to room temperature For 12 hours, the germination temperature was 30-35°C. Pumpkin soaked for 6 to 8 hours, germination temperature 25 ~ 30 °C. The dark-skinned squash is sown 1 to 2 days later and most of the seeds are sown when exposed. When the true leaves of the pumpkin are exposed, the bitter gourd is grafted for a suitable period of time. 2. Grafting method is used for grafting: When grafting, planting with planting should be carried out. Immediately after the completion of the small arch cover, increase the temperature. 30 ~ 32 °C during the day, about 20 °C at night, humidity above 95%. The first three days need to be shaded all day, but not on cloudy days. 3 to 6 days from 10:00 to 3:00 occlusion, see light at other times, generally survive 10 days after grafting, and then cut off the roots. Keep 25°C during the day and 15°C at night. Before the planting, the night temperature can be reduced to about 10°C for low-temperature hardening. It is usually planted in early December. Combined with deep-sloped soil preparation, per acre, 10,000 kilograms of organic fertilizer with good quality, 100 to 150 kilograms of cooked cake, and 25 kilograms of diammonium are used. The colonization density was 80 cm in row spacing, 30 cm in spacing, and 2,800 plants per acre. Planting cover mulch. 1. Temperature Management For bitter gourd in winter and spring and wintering, after planting, it is necessary to emphasize the closed greenhouse, raise the temperature, and promote the easing of seedlings. Generally, the temperature during the sunny days can reach 30-35°C, and not less than 15-12°C during the night. After easing the seedlings, the temperature is gradually lowered to the normal temperature, that is, the daytime of sunny days is 20-25°C, and the nighttime is about 15°C. Basic temperature management principles and scales can be referenced to cucumbers. 2, fertilizer and water management when planting stable seedling water pouring, autumn and winter wolfberry and overwintering pods in the whole room after planting is completed, but also along the ditch planting water, winter and spring boring will engage in 1 or 2 times ramets watering. Regardless of which, after the easing of seedlings, they should be poured into the sewers for one time, and then transferred to the cultivator to raise the temperature, and promote root development. As a result, it was necessary to control the fertilizer and water before, and to promote the seedlings to grow steadily. Usually, the first time after the male flower is opened, the first time the fertilizer is recovered, and after the result, the fertilizer is applied for the second time, and the amount of fertilizer and water is gradually increased. Shenggua period 3 to 4 days poured 1 water, 7 to 8 days to recover 1 fat. Fertilizers use 15-20 kg of compound fertilizer per acre. Overwintering and winter and spring, when the weather in the spring warms up, when the air is released, it can flush human excrement with water 2 to 3 times, 1000 to 1500 kilograms per acre. 3, insert racks of vines and vines grow to 30 centimeters or so, it is necessary to insert racks, so that the introduction of vines on the shelves. Start vines can take s-shaped ascent. 4, plant adjustment bitter gourd is dominated by vines. There are few side vines below 50 cm from the ground. Therefore, they must be removed in time for introduction. Above the ground, if lateral branches grow too profusely and densely, they should be properly removed. In short, we must ensure the growth of the main vine in order to exert its advantage. After the main vine reaches the top of the rack, it is to be picked up. At the same time, 3 to 5 side vines are left in the lower part of the vine, and 1-2 guashes are reconstituted on each side. Some also took the main vines and took two strong side vines when they were about 1 meter long. When tending to vines, tendrils and male flowers must be removed. Attention should be paid to adjusting the position and direction of the vines, and timely cutting off delicate or dense old vines to minimize mutual shade. 5, Baohuabaoguo picks male flowers that can be opened on the second day in the afternoon of the first day and put them in a dry environment at around 25°C. At 8 to 9 o'clock the next morning, take the male flower and tear off the corolla, gently pollinating the female stigma. Usually 1 male flower is used to pollinate 3 female flowers, and do not harm female stigma when pollinating. The bitter gourd is for the edible of tender guava, and the maturity conversion is very close to maturity, so it is timely to harvest. The standard for harvesting was 12 to 15 days after flowering. The strips and knobs of the fruit swelled and the top of the fruit became smooth and began to glow. The pericarp turned from dark green to bright green and shiny. As for the prevention and treatment of bitter melon pests and diseases, as well as other crop pest prevention and control, we must implement the principle of “prevention, comprehensive prevention, accurate diagnosis, and remedy for the disease”. In the cultivation of bitter gourd, there are mainly blight, blight, downy mildew, etc. that are more difficult to control; the main pests are melon flies, aphids and so on. 1. Fusarium wilt disease: The performance of the shoot is wilting at the early stage of the onset of the shoot, normal in the morning and evening, and the whole plant withered after several days cannot be recovered. Cross-sectional view of the base and roots of the stem showed vascular tissue browning. Prevention measures should avoid continuous cropping of melon crops. To promote the nutrition cup nursery, transplanting with soil, reduce the chance of pathogen invasion, and actively promote the use of seed coating agent "2.5% Shiloji" suspension seed dressing technology. The specific method is to soak the seeds and wait until they absorb the water and drain them (do not shoot out). Take 1 bag (10 ml) of water for 150 hours and 200 ml, and pour the seeds and liquid into a plastic bag. A bag of "Shi Le" can be mixed with 5 to 10 kg of seeds). The seeds of Miao Qi and Miao Zhuang that are processed through the “Yoshishishi” can also effectively prevent and control other diseases at the seedling stage, and can provide a disease protection period of up to 4 months. In bitter gourd wilt disease or historical wards, it is advisable to apply 2000-times “Cola-Hui Shi” or 10% Sequoia Dispersing Granules at the beginning of flowering period, 80 g/mu, and 200 kg/mu of liquid medicine per mu. 0.5 kg, once every 10 days, once for 3 consecutive times, can effectively prevent the occurrence of blight. 2. Broom disease: damage to leaves, stems, and fruits, affecting the growth of stems. Stem joints are susceptible to disease. The disease department is dark brown and dark, with dense black spots, spilling gums, and stem segments shrinking. The leaves are susceptible, and the lesions expand inward into "v" shapes from the leaf margins. Juvenile mellow flu, pale brown flesh or heart rot. Prevention and treatment of bacterial blight: Seed treatment can be used for “gentle-time”, and the control of the growth phase focuses on the initial onset of the disease. The use of internal suction therapeutic bactericides such as Shigao 1000 ~ 1500 times, every 7 ~ 10 days continuous spray 2 ~ 3 times. When dispensing drugs must be formulated into a mother liquor, and then poured into the sprayer, so that the consistency of the liquid concentration. 3, downy mildew: the main damage to the leaves, but also harm the flowers and flowers. In the early stage of disease, the leaves appeared water-stained, light green spots, and they expanded to form a polygonal shape. They were yellow-green and yellow, and finally they were brown. When the disease was serious, the leaves died and directly affected the plant growth. High humidity is the premise of the disease, and low-lying, densely planted, poor ventilation and light transmission, lack of fertilizer, and excessive watering can all induce the disease. Control methods: Select well-drained plots, apply adequate basal fertilizer, increase phosphorus and potassium fertilizers, remove old leaves in time, ventilate and transmit light, and control the onset center as soon as possible. Use the internal suction to treat fungicides 53% Jin Lei Duo Mier water dispersible granules 600 times , spray once every 7 to 10 days, continuous spray 2 or 3 times. 4, fruit fly fruit fly: commonly known as "acupuncture bees", adults lay eggs in fruits and melons, larvae feeding in melon flesh, causing melon rot, and even fruit drop, seriously affect the quality and yield of melon. During the peak period of the needle bee, a multi-pronged and comprehensive management method can be adopted such as idyllic cleaning, adult trapping, insecticide killing and bagging. For insecticide use, "Kung Fu" is recommended. A packet (5 ml) of "Kung Fu" sold on the market is just right for a bucket of water (15 liters). Spraying was performed before 10 to 11 o'clock in the morning, or at 4 to 6 o'clock in the afternoon, and the effect was better when the adult mating spawned. One of the methods of trapping and killing is to use a yellow plate and paint yellow cardboard or plastic sheet with vaseline in a garden, with about 20 pieces per acre, which has a better trapping effect on adults. Vigorously promote the new technology of bagging and guaranty, which can reduce the damage of various pests and diseases and improve the quality of fruits and melons. 5, Gualou: adult melons, nymphs clustered in the back, tender stems and tender shoots sucking juice. The insects will cause damage to the shoots, the leaves will curl up, the growing point will die, the leaves will shrink, yellow and fall off in advance, and they will also cause soot and spread virus disease. Chemical Control Recommendations Efficient, broad-spectrum, safe, long-lasting 25% Aktai water dispersible granules with a duration of 21 days, 5000 to 10000 times effective, can effectively control quails, and can be used to treat both thrips and raccoonites. And other pests. 6, Gualou: larvae feeding on the leaves, resulting in perforation or lack of carved leaves, often into the melon, affecting the yield and quality. Chemical control uses 50% Coulomb 1000 times or 2.5% kung fu 1500 times spray, spray once every 7-10 days.

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