Planting time and high-yield planting methods of broccoli

First, planting time

Broccoli is mainly cultivated in autumn and spring. Autumn is usually sown in early July and can be harvested in mid-September, while spring cultivation is usually sown in mid-March and can be picked in early June. if it is cultivated in a greenhouse all the year round, you only need to adjust the temperature, but there are more vegetable farmers planted in March.

II. Planting methods

1. Parcel selection

The plots with high dryness, good drainage and fertile soil were selected for planting and sowed in early July.

two。 Soil preparation and fertilization

Turn the bed deeply before sowing, apply 500 kg of rotten organic fertilizer per mu and 15 kg of high concentration ternary compound fertilizer as base fertilizer, water thoroughly one day before sowing, sow, cover fine soil after sowing and compact, so that the seeds are in full contact with the soil.

3. Water and fertilizer management

Watering once a day for three to four days after planting, control watering after survival, and then watering to keep the soil dry and wet. Fifteen days after planting, 15 kg of ternary compound fertilizer was applied per mu; 30 days after the first fertilization, 10 kg of urea and 10 kg of ternary compound fertilizer were applied per mu; after the heart leaves were twisted, 20 kg of ternary compound fertilizer, 10 kg of urea and 20 kg of potassium chloride were applied per mu to ensure that there was no shortage of fertilizer during the heading period.

4. Pest control

The main diseases are sudden disease and downy mildew, which can be controlled with 72% Kelu 600 times and 50% carbendazim 500 times respectively. The main pests are aphids, cabbage insects, Plutella xylostella, beet armyworm and so on. Aphids can be sprayed with 2000 times of imidacloprid, and Plutella xylostella can be alternately treated with 1500 times of Yitaibao and 2.5 times of vegetable.

5. Harvest

As a fresh-keeping bouquet, harvest when a single ball weighs 250-300 grams, and as a large flower ball, when a single ball weighs 750-1250.