When will the broccoli be ready? How to grow high yield?

Broccoli, also known as green cauliflower, is a common vegetable in China. It is very popular because it is rich in vitamins. The current price is about 5 yuan / jin, so it is very expensive. When will the broccoli be planted? How to grow high yield?

The planting time of broccoli usually begins to sow in autumn, grows in winter, goes on the table normally after the Spring Festival, blossoms in spring to seed maturity in April and May, and seedlings in summer and autumn are raised in the high temperature season from August to October, when the temperature is generally above 25 ℃, sometimes 30-35 ℃, coupled with the harm of rainstorm and hail, so shade net is used to raise seedlings in the open field, and the seedling age is generally 35-40 days. Sowing or direct hole planting can be used, the average seedling stage is about 30 days, from planting to harvest 80-90 days, the winter is slightly stronger, the seedling stem diameter 10 mm can accept the effect of low temperature to complete the vernalization process.

High-yielding planting methods of broccoli

First, sow seeds at the right time and cultivate strong seedlings

The plots with high dryness, good drainage and fertile soil were selected for planting and sowed in early August. 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. 100 ml of 60% butachlor EC plus 50 kg of water per mu was sprayed to control weeds, while 3% net per mu was applied to control underground pests. Build a sunshade to cool down, uncover the seedlings sooner or later after emergence, do not cover them on cloudy days, refine the seedlings and improve the stress resistance of the seedlings. The sunshade net should be covered in time in heavy rain or rainstorm weather.

Second, apply sufficient base fertilizer and plant closely in a reasonable way.

10-15 days before transplanting, 1000 kg of rotten organic fertilizer per mu or 100kg of commercial organic fertilizer, 30kg of ternary compound fertilizer and 1.5kg of boric acid were applied as base fertilizer, and 20kg of calcium magnesium phosphate fertilizer per mu was applied to the planting hole. The width of the built bed is 1.4 meters and the width of the ditch is 0.3 meters. Each bed is planted in 2 rows, and the plant spacing is 35-45 cm. For fresh-keeping flower ball harvest, 2500-3000 plants per mu, 2000-2300 plants per mu for large flower ball harvest.

Third, strengthen the management of fertilizer and water

Water once a day within 3-4 days after planting, and control watering after survival. Keep the soil dry and wet from now on. Topdressing should be early, mainly promoting. 15 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 leaf began to spin, 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.

IV. Pest control

The main seedling diseases of Lvxiong 90 broccoli are sudden disease and downy mildew, which can be controlled with 72% Kelu 600 times and 50% carbendazim 500 times respectively. The disease after colonization is mainly black rot, which can be sprayed with 72% agricultural streptomycin 3000-4000 times, focusing on the base of the diseased plant and the ground.

The main pests are aphids, cabbage insects, Plutella xylostella, beet armyworm and so on. Aphids can be sprayed with 10% imidacloprid 2000 times, cabbage insects can be alternately treated with Bt1000 and 20% diflubenzuron, and Plutella xylostella can be alternately treated with Yitaibao 1500 times and 2.5% vegetables 1000 times.

V. timely 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.