Planting techniques of cauliflower how to grow cauliflower

Cauliflower is a kind of vegetable that is resistant to high temperature and low temperature, which is more common in summer every year. Sales volume has also increased in recent years due to people's better understanding of cauliflower. There are a lot of people want to grow it, want its high yield, mainly to master planting technology.

Planting techniques of cauliflower

The main results are as follows: 1. Select the seedlings and generally dig out the old roots of 1 / 3 from the old yellow flowers that have been growing for many years or use the seedlings propagated by slicing and sprouting as seedlings. If you use the old root as a seedling, you should break the bud and shake it and "pick a small piece", that is, the main root in the middle below the rhizome.

Remove the rotten roots, leaving a layer of branches above, each with a single bud.

2. Planting time. Cauliflower can be planted except for prosperous seedling stage and picking stage, generally in spring and autumn, before and after the Qingming Festival and after the soil is thawed.

3. The form of planting. Planting in wide and narrow rows with 2 rows in each row, with a wide row spacing of 1.3 meters and a narrow row spacing of 0.6 meters. After planting, the seedlings are exposed to the surface of the earth by 1 cm, and rehydrated to slow down the seedlings.

① single hole planting method. The distance between the acupoints is 0.5m, and each hole is an equilateral triangle with a side length of 0.2m, with three plants per corner, 1400 holes per mu and 4200 seedlings per mu.

② single-row and double-plant method. The distance between plants was 0.4m, 2 plants per hole and 3500 seedlings per mu. 4. The depth of cauliflower planting is closely related to the high yield or sooner or later, the planting is shallow, the vegetables are divided quickly, and enter the high yield period 1-2 years earlier. According to several years of practice, it is appropriate to plant 20 cm deep.

How to grow cauliflower

1. Reasonable close planting: close planting of cauliflower can give full play to population advantages, increase the number of tillers, bolting and buds, and achieve the purpose of increasing yield. Generally adopt wide and narrow row cultivation, wide row 60 cm 75 cm, narrow row 30 cm 45 cm, hole distance 9 cm 15 cm, planting 2 plants per hole, planting 45000 ~ 75000 plants per hectare, and the peak yield period reaches 1.5 million ~ 2.25 million plants / ha.

2. Appropriate deep planting: the root group of cauliflower grows from around the shortened stem, with one layer a year, and the root position moves up year by year from bottom to top, so proper deep planting is beneficial to plant survival and prosperity, and the suitable planting depth is 10-15 cm. Root water should be watered after planting, and the soil should always be kept moist before autumn seedlings grow, so as to facilitate the growth of new seedlings.

3. Cultivating soil in middle ploughing: cauliflower is a fleshy root system, which needs fertile and loose soil environmental conditions in order to be beneficial to the growth and development of the root group. During the growth period, intertillage should be carried out for 3 times according to the growth and soil consolidation, and the first time should be carried out when the seedlings are unearthed. The second to fourth times in the bolting stage combined with mid-tillage to cultivate the soil.

Fertilization techniques of cauliflower

1. Seedling fat. Seedling fertilizer is mainly used for seedling emergence and long leaves to promote early growth and rapid development of leaves. Seedling fertilizer should be applied sooner rather than later, topdressing at the beginning of sprouting of cauliflower, calcium superphosphate 150kg/hm2 and potassium sulfate 75kg/hm2.

2. Lei Fei. Bud fertilizer can prevent cauliflower from getting rid of fertilizer and early senescence, increase bud rate, prolong picking period and increase yield, and urea 75kg/hm2 should be applied within 7-10 days after picking. At the same time, during the picking period, 0.2% potassium dihydrogen phosphate was sprayed on the leaves every 7 days or so, 0.4% urea, 1%-2% superphosphate (filtered) aqueous solution, and 15~20mg/ Kg920 was sprayed once after 17:00, which had obvious effects on strengthening buds and preventing bud removal.

Pest control of cauliflower

1. Leaf blight. Leaf blight generally harms the leaves of plants, with white round spots at first, then gradually withered, and black mildew if it is too wet. The specific treatment is to spray chlorothalonil on the leaf surface with the same frequency and frequency as above.

2. Anthrax. Anthrax damage is also mainly on the leaves, leaf tips will gradually change from dark green to dark yellow, resulting in small black spots. Even the leaves will die. The specific method of prevention and control is to spray Bordeaux solution of 1purl and 100 or chlorothalonil in time at the beginning.

3. Red spider. When the red spider harms cauliflower, it will suck up juice on the leaves, showing gray spots, and if serious, it will also cause the plant to die. It can be sprayed with 73% propargite 2000 times solution.

When planting cauliflower, you need to do a good job of site selection. Cauliflower can't stand stagnant water, so drainage should be done well. In the later stage of planting, it is necessary to strengthen the management of fertilizer and water work. Cauliflower is vulnerable to insect pests, so the work of pest prevention and prevention should be done in a comprehensive way. Only when these are done well, the growth of cauliflower will be good and the yield will be high.