Seedling raising: the seedbed soil is applied with decomposed manure and human excrement and urine, and then the seeds are sown in the seedbed (3-4g/ m2) and covered with fine soil. Planting: Make ridges with a width of 8cm, a width of 4cm and a height of 25cm, and then plant the seedlings in the field (the spacing between plants is 4-5cm). Management: 4,-5, kg of decomposed manure, 2-25kg of calcium superphosphate and a proper amount of borax solution are applied as base fertilizer per mu.

1. Planting time and method of cauliflower

1. Planting time

If it is an early-maturing variety of cauliflower, it is usually planted in June-September; if it is a middle-maturing and late-maturing variety of cauliflower, it is usually planted in November to February of the following year.

2. Planting method

(1) Seedling raising

① After the seedbed is deeply turned over, 15kg of decomposed manure and 1kg of decomposed human excrement and urine are applied to each mu of land.

(2) Before sowing, water is allowed to permeate for about 8-1cm, and then a layer of fine soil is sprinkled.

③ evenly sow the seeds in the seedbed (sow 3-4g per square meter of seedbed), and then cover with a layer of fine soil with a thickness of .5-.8cm.

④ when the seedlings grow to 2 leaves and 1 heart to 3 leaves and 1 heart, divide the seedlings with a row spacing of 1? 1cm。

⑤ seedlings were tempered at low temperature about 15 days before planting, and the temperature of seedbed was controlled at about 5℃.

(2) Planting

① Before planting, 4,-5, kg of decomposed manure and 2-25kg of calcium superphosphate were applied to each mu of land, and 5g of borax was used to prepare an aqueous solution for spraying.

② ridging. Ridge width is 8cm, ditch width is 4cm, and ridge height is 25cm.

③ When planting, the plant spacing should be controlled at about 4-5cm. Early-maturing varieties, 2-22 plants per mu, and mid-late-maturing varieties, 18-2 plants per mu.

(3) Management

① When the leaves are closed, 15kg of potassium sulfate and a small amount of zinc-manganese microelement fertilizer are applied to each mu of land.

(2) At the initial stage of flower ball formation, the nodulation fertilizer was applied. Apply 1-15kg compound potash fertilizer per mu for early and middle-maturing varieties, and 15-2kg compound potash fertilizer per mu for late-maturing varieties. Subsequently, according to the degree of flower ball formation, spraying 5 times of potassium dihydrogen phosphate solution for 1-2 times.

③ In the rosette stage, combined with watering, 15-2kg urea was applied to each acre.

(4) In the middle and late stage of bulb swelling, .1-.5% borax solution is used for foliar topdressing, once every 3-5 days and once every 3 times. If the nutrition is insufficient, a mixed solution of .5% urea and .5% potassium dihydrogen phosphate can also be applied.

(5) after the flower ball appears, water it every 4-6 days, and stop watering 5-7 days before harvesting.

2. Prevention and control of cauliflower diseases and insect pests

1. At the initial stage of downy mildew

, spray 8-1 times of 5% dimethomorph or 66.8% propineb? 7-1 times of the wettable powder of Jiemuwei, or 8-1 times of the 72.2% Prick aqueous solution, or 5-6 times of the wettable powder of 64% antivirus alum, or 8 times of the 25% thiram, or 5-7 times of the wettable powder of metalaxyl, or 25% metalaxyl wettable powder.

2, gray mold, Sclerotinia sclerotiorum

At the initial stage of the disease, spray 3% ethylene zinc? 8-1 times of iprodione wettable powder, or 2% different bacteria? 15-2 times of carbendazim suspension, or 2 times of 5% Sukeling wettable powder, or 1-12 times of 4% pyrimethanil suspension.

3. At the initial stage of black rot, soft rot and bacterial black spot

, spray 16 million units of hypertonic 72% agricultural streptomycin sulfate wettable powder 25-3 times, or neophytomycin 25-3 times, or 47% Garenon wettable powder 7-75 times, or

4. Aphids are

sprayed with 2-3 times of 5% pirimicarb wettable powder, 3 times of 25% Uranus emulsifiable concentrate or 3 times of 2.5% Kung Fu emulsifiable concentrate, once every 7-1 days and 2-3 times once.