Vegetable cultivation techniques

The heart-cultivation technique is different in different regions and the cultivation time is different. In the Yangtze River basin and in the south of the region, early maturing varieties can be planted from April to August. Harvesting starts from 30 to 45 days after sowing and is available from the period of May to October. Medium-maturing varieties are sown from September to October and harvested 40 to 50 days after sowing. The harvesting period is from October to January. The late-maturing varieties were sowed from November to March of the following year. The harvest was started 45 to 55 days after sowing. The harvesting period was from December to April of the following year. The Jiangnan region has basically achieved the objective of planting all seasons and supplying it throughout the year. The open field cultivation in North China is divided into spring and autumn. The early and late-maturing varieties can be cultivated in spring and sown from March to April, and harvested from late April to early June. It is used in the open field cultivation in autumn. Precocious varieties, sown from August to September, harvested from September to November. When cultivated in the protected area, the late-maturing variety is used for sowing from October to February, and harvesting can be started two months after sowing. In the north of China, Caixin has also basically achieved its annual supply.

Spring Cultivation Techniques Spring Chinese cabbage cultivation in spring is the off-season season for vegetables in late spring and early summer, which has a great effect on enriching the varieties of vegetables in the market.

1. Nursery

The heart of the cabbage can be broadcasted or nursed. In order to save land, it is appropriate to raise seedlings. Cai Xin Tian Cai Xin Tian

The seedbed should be built on a plot of cruciferous crops that had not been planted in the previous year. Sandy loam or loam should be used. 45,000 kilograms of decomposed organic fertilizer should be applied per hectare.

Fill large water before sowing and sow water after soaking. Seed use per hectare 7.5 ~ 10.5 kg. Can transplant 0.6 to 1 hectare. After sowing, cover soil 0.5 to 1 cm.

Immediately after the seedlings emerged, the seedlings emerged. Pull out the connate, crowded and dense seedlings. Before the first true leaf was flattened, a total of 2 to 3 seedlings were planted. Finally keep the seedling spacing 3 to 5 cm, so that the seedlings have enough nutrient area to prevent excessive growth. The first true leaf is chased once, and 150 kg of urea are applied per hectare; the human excreta can be applied at a rate of 7500 to 10,000 kg per hectare to promote seedling growth.

Keep the soil dry and wet at the seedling stage and water every 5 to 7 days.

The shape of the seedlings when planting was: there were 4 to 5 leaves, and the seedlings were 18 to 22 days old. The root system was well developed.

2. Colonization

The cultivated land should be fertile loam or sandy loam, with 45,000 to 75,000 kg of organic fertilizer per hectare or 22,500 kg of human waste. After a deeper turn, make it flat. When the planting period is very late, sorghum can also be made to facilitate the growth of the flood season during the rainy season.

The spacing of colonized plants was 13 cm 16 cm for early maturing varieties and 18 cm 22 cm for late maturing varieties. When planting, care should be taken to minimize the damage to the root system to facilitate survival. Immediately after planting irrigation.

3. Field management

Vegetable heart slow seedling fast, rapid growth, large amount of fertilizer, fertilizer should be timely. After the seedlings have been planted for 2 to 3 days, new roots will be combined and water will be applied to topdress the first fertilizer. For each hectare, the human urine excrement of 7500 to 15000 kg, or 150 kg of urea, promotes the rapid growth of the seedlings. When plants bud, the recovery of human excreta 7500 ~ 15000 kg per hectare, or urea 150 ~ 225 kg, to promote the rapid development of vegetables. After most of the main vegetables were harvested, the third fertilizer was applied, and 15000 kg of urine or 150-300 kg of urea were applied per hectare to promote the development of lateral gills.

During the growth period, water is kept every 3 to 5 days to keep the soil moist. Do not make drought affect the growth and development of the vegetable meal, and reduce product quality.

4. Harvesting

The heart of the dish can accept the main and side dishes. Generally, the early maturing period is short, and the main pods are not prone to lateral plague after harvest. After mid-late maturing species are harvested, side pods can also occur. The main crop is harvested for the appropriate period of time when the pod grows to the top of the leaf and when the primordium has the initial flower, it is commonly known as the "flower". If it is not harvested, it will be tender and the yield will be reduced; if it exceeds the appropriate harvest period, it will be too old and the quality will be reduced. The quality of the pods is based on the following criteria: upsetting, sparse internodes, and small, thin basal leaves.

When early maturing varieties only harvest the main bark, the harvesting section should be at the base of the main barn. Mid-late-maturing varieties are prone to side pods, and 2 to 3 leaves are kept at the base of the main pods during harvest to remove the main pods so that the side pods can germinate again. Leaves can not be too much, or there will be too many side licks, slim, thin, quality decline.

The autumn cultivation techniques are planted in the autumnal cultivation of Chinese cabbage in North China from August to September and harvested from September to November. Since the heart of the vegetable heart grows after the vegetable heart grows, the weather is cool, and it is suitable for the growth and development requirements of the Chinese cabbage. Therefore, it is of good quality and very popular with consumers.

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