Grafting watermelon cultivation technology is currently the only effective way to overcome watermelon wilt disease. First, watermelon grafting seedling technology 1, scion and rootstock cultivation. Select the local October Pu and Japanese round Pu as rootstock, using the top plug method. Rootstocks are sown one week earlier than scions. Seeds and watermelon seeds are soaked, disinfected, and germinated prior to sowing. The nutritious soil for nursery use requires looseness, fertility, good water retention, and no pathogens. The rootstock is sown in the nutrient bowl and the scion watermelons are sowed directly on the seedbed. The seeding density should not overlap with the cotyledons after emergence. 2, grafting technology. The first true leaves of the rootstock first emerged, and the cotyledons spread out without the best time for true leaves to graft. Grafted seedbeds were permeable once every 3-4 days prior to grafting. Select grafting at a temperature of about 25°C and a relative humidity of 90% or more. 1-2 days before grafting, the pesticides such as chlorothalonil and carbendazim were sprayed on the seedbeds. When grafting, first gently remove the growth point on the top of the rootstock with a blade, and then insert a sharp bamboo stick from the incision and insert the stem into the stem at an angle of about 30 degrees to a depth of 0.6-0.8 cm. Scion from the cotyledon 1 cm below, beveled into a wedge surface type, immediately insert the scion into the rootstock bamboo sticks, that is completed grafting. 3. Management of seedbed after grafting. (1) The healing period of the interface takes about 8-10 days. 26-28°C during the day and 20-22°C during the night. 4-5 days after ventilation and cooling. The daytime temperature is 23-24°C after 7 days and 18-20°C at night. After grafting, the grafted seedbed should be poured with water once, and then a small arch shed, 3-5 days strict sealed shading, to maintain the relative humidity of more than 90%. The first three days after grafting, the shading was blocked and three days later, the light was observed. (2) Reduce the humidity after the interface has healed, increase the temperature difference between day and night, and perform strong seedling exercise. It is generally 22-24°C during the day and 10-15°C at night. The disease was found to be sprayed in time, and the new rootstock leaves were promptly removed. Second, grafted watermelon cultivation techniques Grafted watermelon cultivation than conventional cultivation of different places are mainly: (1) planting density can be reduced appropriately. Grafted watermelon can take 3-4 vine pruning, a seat and more fruit, generally more suitable for 450 per acre. (2) The amount of fertilizer can be appropriately reduced. The amount of nitrogen fertilizer application can be appropriately reduced to control the excessive growth of vines. Generally can reduce about 20% of nitrogen fertilizer. (3) Mainly for controlling common pests. The grafted watermelon overcomes the diseases of the wilt disease, and mainly controls other diseases such as epidemic diseases and anthrax diseases. Grafted watermelon should not be buried in the soil during the planting process.
Poultry farming is the process of raising domesticated birds such as chickens, ducks, turkeys and geese for the purpose of farming meat or eggs for food. Poultry are farmed in great numbers with chickens being the most numerous. More than 50 billion chickens are raised annually as a source of food, for both their meat and their eggs.[1] Chickens raised for eggs are usually called layers while chickens raised for meat are often called broilers.[1] In the US, the national organization overseeing poultry production is the Food and Drug Administration (FDA). In the UK, the national organisation is the Department for Environment, Food and Rural Affairs (Defra).
Poultry Husbandary Tools
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