Autumn flower cultivation techniques
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1. Select varieties of early-maturing varieties of autumn broccoli: Fast growth, high yield, early maturation, more resistant to viral diseases and black rot, densely dense flower bulbs, and 50-60 days after planting. Green, Shanghai No. 1, Zhongqing No. 1, No. 2 and other varieties can be selected.
2, land preparation with the base fertilizer to choose irrigation and drainage convenience, good water retention and fertility plots deep plowing, specifications for rake. The center furrow furrow high-quality farmyard fertilizer (667 square meters) 3000 kg, 30-40 kg of superphosphate, 30-40 kg of ammonium bicarbonate, 20-30 kg of potassium chloride after the flat ditch.
3. Seedlings and seedlings are planted and planted in the middle and lower reaches of the Yangtze River. Seedings are generally planted in early August. The seedbeds are sown before sowing, sowed in detail after sowing, and covered with shade nets after seeding. Control watering after emergence. Seedlings are grown to 15 days for prosthesis, and diseased and inoculated seedlings are removed. In early September, about 30 days of seedling age, 5-6 leaves when planting, line spacing is 60 cm X (35-40) cm, 667 square meters planted 2700-3000 strains.
4, top-dressing watering seedlings live after 4-5 days, 667 square meters Shijiao large manure 1000 kg; 10 days urea application 10 kg; 20 days application of compound fertilizer 20 kg, while the foliage spraying 0.05% -0.1% Ammonium molybdate and 0.3% borax are used to promote flower bulbs to expand quickly and compactly. Green cauliflower afraid of drought and drought. Focus on clearing the ditch before the rain, so that the rain stops dry. In case of dry weather, the irrigation of large-scale ditch water, drainage after the wet surface, to keep the soil moist in the field.
5. Disease prevention and control The main pests of broccoli include black spot, black rot, virus disease, aphids, Plutella xylostella and Pieris rapae. Anti-black spot and black rot can be sprayed 2-3 times with 50% thiophanate or 50% carbendazim 800 times. The anti-virus disease can be treated with 1000 times solution of plant disease or 20% of virus A500-600 times; Locusts can be used 40% dimethoate 800 times or 90% crystal trichlorfon 1000 times control; control moth, cabbage caterpillar can be used 20% cypermethrin 2000 times solution or card dead 3000 times 3000 times solution.
6. The collected flower bulbs are fully grown. The color is dark green. The bulbs are slightly concave. When the buds are tight, the stems are cut obliquely with a knife. The main flower bulb has 7 cm of tender stems, and the lateral flower bulbs have 7 to 10 cm of stems.