Cauliflower is a semi-cold crop, and it is not hot. It is one of the main varieties of autumn and winter vegetables in southern China. However, the autumn cauliflower is difficult to raise in the high-temperature season from June to August, which affects its large-scale cultivation and production. Now the cauliflower and autumn cauliflower cultivation techniques in early autumn are focused on the following brief introduction of the Seedling raising techniques.

First, choose high quality, high yield, timely sowing
1. Early autumn cauliflower is generally selected from the Japanese Suxin, Longfeng extra large 50, 60, 70 days and other early-maturing varieties, sowing seedlings in mid-June and mid-July. It can be harvested from early September until late October.

2. The main varieties of autumn cauliflower include Japanese and late-maturing varieties such as Japan's Baoyue and Longfeng, which are over 80 days, 90 days, and 100 days. It is harvested from mid-November to mid-Dec.

These varieties have been successfully cultivated in some areas of our province. Their heat resistance and high yield are prominent. The flower bulbs are compact, soft and white, and they are harvested during the autumn season. The benefits are considerable.

Second, careful management, nurturing seedling nursery should be selected high dry terrain, ventilation, cool, loose soil, fertile sandy loam soil is appropriate. The previous crop was not grown cabbage vegetables, and the new cropland was better. After the land is deeply turned and exposed, the seedbed should be north-south. About 2.5 kg per square meter of fermented organic fertilizer or 1 kg of human or animal waste is basal. Cauliflower seed is small, so the seedbed should strive for leveling. The seedbed needs 2.5 to 3 square meters per acre, and seeds 15 to 20 grams. Seeds soaked in warm soup for 15 minutes, soaked in water and soaked for half an hour, then removed and left to dry, germination in the shade 24 to 48 hours to the seed dew, you can sow. Before seeding, the seedbeds should be poured into bottom water. After the infiltration, spread the fine soil, then drill or sow the seedlings, cover the fine soil evenly after sowing, and it is advisable to not see the seeds. Then cover the shade net or bamboo curtain to prevent rain and sun.

2 to 3 days after seeding, seedlings emerged and the cover was uncovered in the evening, and water was sprayed the next morning to keep the seedbed moist. Sunny shading from 9 am to 4 pm, cover 5 to 6 days and shorten the shade time until the first true leaf appears. After the emergence of true leaves, pay attention to weeding and timely control of pests. 2 to 3 true leaves when weeding and thinning 1 seedlings, 800-1000 seedlings per square meter. After the seedlings, apply 20% concentration of composted manure. The second round of water manure dressing of the same concentration was carried out 3 to 4 days before transplanting.

Generally 20 to 25 days after sowing, 3 to 4 true leaves begin to be planted, and the seedling bed is prepared to be seedling bed. In the morning, the planting ditch was drenched, and the planting was done in the evening. The length of the planting line was 10 cm and 10 cm, the size of the seedlings was graded, and the lines were lined up so as to facilitate colonization before transplanting. Immediately after prosthesis, the rotten and clear water feces can be sprayed. Shady sunny days 3 to 5 days. Early morning and evening watering. 7 to 10 days after planting gradually reduce the shading time hardening seedlings. After 10 to 20 days, 5 to 6 true leaves of the seedlings can be planted with soil. One evening before transplanting and the morning of the same day, the seedbed should be watered to raise seedlings. When planting, watering should be carried out while transplanting seedlings, and it should be carried out in sunny afternoons or on cloudy days. It can also be shaded after transplanting. To facilitate survival.

Third, the field cultivation and management of cauliflower hi moist, but the resistance is poor, should take deep sorghum cultivation measures, per acre (1 acre: 1/15 hectare, the same below) with decomposed manure 2500 ~ 5000 kg or manure 1500 ~ 2000 Kg, phosphorus 20 to 25 kg. Early autumn cauliflower planted two rows of 1.32 meters wide (even ditch) pods with a spacing of 33 cm. 2000~2300 strains per mu.

Due to the different varieties and cultivation period of cauliflower, the management of water and fertilizer should be different. Early autumn cauliflower application of available fertilizers in phases, the formation of flower bulbs, should increase the fertilization in order to promote the growth of leaves and flower bulbs, for early maturation, high yield. The autumn cauliflower also uses the available fertilizers to catch up in phases, but at the same time it should be supplemented with phosphorus and potassium fertilizers. If we find that there are hollows in the center of the flower bulbs and that the flower bulbs are rusty and brown, we should make proper use of boron and molybdenum. Micro-fertilizer.

Cauliflower needs more water throughout the growth process. In periods of vigorous leaf clustering and flower bulb growth, avoid water shortages. However, irrigation should not be flooded. Water should be filled in the ditch, and the residual water should be eliminated in time after the ditch has penetrated. The rain should be able to drain in time during the rain, so as not to cause root defects.

After the late autumn cauliflower is exposed, it should be promptly wrapped with large leaves outside the flower bulb, and then gently tied with straw and other objects. When the bundle is bundled, do not damage the leaves, and the big leaves close to the flower ball can be broken to cover the flower balls. To prevent frost and ensure quality.

4. Diseases and Insect Pest Control Cauliflower is susceptible to downy mildew in the seedling and field under high temperature and high humidity conditions. It can be applied by spraying 75% chlorothalonil 600 times solution or 65% zeocin 400 to 600 times solution or 25% rosacea 800 to 1000 times liquid prevention. It can also be recommended according to the local agricultural technical department. Control yellow striped flea beetle, cabbage caterpillar, diamondback moth, rapeseed meal, 20% can be used to kill chrysanthemum or 2.5% of deltamethrin 3000 times, can also use other broad-spectrum wow insecticide.

Seedling

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