Early seedlings and early seedlings. When the seedlings are required to do "five to five to stay", that is, weak seedlings to retain strong seedlings, to leave small seedlings to retain large seedlings, leave pure seedlings to leave miscellaneous seedlings, disease seedlings to retain healthy seedlings, to keep seedlings left seedlings. Seedbed seedlings usually have two or three times, the first time in the Qimiao, with the exception of clumps, not densely seedling clustered; the first time in the emergence of the first true leaves, leaves do not require leaves, seedlings do not rely on Seedlings; the third time in the emergence of three true leaves when the Dingmiao, leaving rare leave. Leakage of 110 to 135 plants per square meter. Combine drought-resistant early fertilization with watering. Rapeseed often suffers from drought after sowing, and it is difficult for seed to germinate and emerge. It must be watered and drought-resistant in time. The methods of drought resistance are water pouring and infiltration by furrow irrigation. Do not use flood irrigation when furrowing, so as not to cause rot. Drought watering must be flexibly controlled based on drought conditions and seedlings. After two or three true leaves, if the leaf color changes from green to yellow and grows slowly, it should immediately be topdressed. Top dressing should be based on human fecal urine, with urine 500 to 1,000 kg or urea 5 kg per 667 square meters. Do a good job of pest control. Insect pests in nursery were dominated by cabbage caterpillars, aphids, fleas, fleas, and underground pests. Can use 10% imidacloprid wettable powder 1000 times, 2.5% ericoil EC 3000 times, 40% acephate EC 1000 times, 50% phoxim EC 1000 times spray control, focus on spray aphids Loves the back and tender parts of the gathered leaves. Diseases mainly include viral diseases, downy mildew, black rot, and soft rot. Virus disease with 20% Poison A WP or 95% Virus BWP 100 grams, spray 30 to 40 kg of water, while also using 10% 10% imidacloprid spray, do a good job such as locusts Control of poisonous media; downy mildew mu 75% chlorothalonil 100g spray 30kg water; black rot, soft rot mu 20% thiazole copper suspension 100g or mu 72% agricultural sulfuric acid Streptomycin soluble powder 20 grams, spray 30 to 40 kg of water. Timely spraying paclobutrazol control seedlings. According to the weather conditions and growing seedlings, spraying paclobutrazol in the 3 to 4 leaf stage, spraying 1 kg of paclobutrazol to 5 kg of water for 5 kg per seedbed to prevent emergence of tall seedlings and cultivating strong seedlings. Marine Tourism Food,Shrimp Skin,Seaweed Snacks,Dried Shrimp Zhoushan Fudan Tourism CO., LTD , https://www.fudanfood.com