Planting Chinese cabbage in summer and autumn is prone to pests and diseases. The growth period of Chinese cabbage is short, and the pest control is difficult. However, the quality of summer and autumn cabbage is good, the benefit is high, and the market demand potential is large. Therefore, planting summer and autumn cabbage, this cultivation technique is worth learning!
The method of planting summer and autumn cabbage is as follows:
Years of practice have proved that insect-proof net cover cultivation is a new agricultural technology that saves labor, labor, increases production, is simple, practical, high-quality, high-efficiency and pollution-free. It has opened up a new way of physical control of vegetable pest control and disaster prevention, with a very remarkable society, Economic and ecological benefits.
1. Planting summer and autumn cabbage facilities type and mouthwash arrangement
1.1, facility type
The greenhouse in the Rudong County (Jiangsu Province) where the author is located is mainly a flat-top greenhouse with a height of 2-3 m and an area of ​​1 350-2 000 m2 or a span of 6 m, a length of 30-60 m, and an arch spacing of 0.8-1. m, 1.8-2 m high standard steel frame greenhouse, 20-25 mesh white or light gray insect net, using 1 000-1 100 m2 per 667 m2.
1.2, èŒ¬å£ arrangement
Flat-topped greenhouses are generally covered with insect-proof nets from April to November, and can be planted 4-5 茬. Steel sheds are generally used as early spring greenhouse tomatoes, cucumbers and other vegetables after the end of the cultivation, from late June to mid-September Planting 2 茬 with insect nets, short cycle and high efficiency.
2, summer and autumn cabbage cultivation techniques
2.1, variety selection
Xiaqiu Cabbage chooses high quality, high yield and heat resistant varieties.
2.2, cultivation management
1 Soil preparation and fertilization
15 days before sowing, the base fertilizer should be applied to the ground before the insect net is covered. Generally, 1 500-2 000 kg of organic fertilizer is applied per 667 m2 and 30 kg of high-concentration compound fertilizer. After spreading, use a rotary tiller to rotate and then make畦, 6 m wide shed for 3 畦, net 畦 face width 1.8 m, 畦 height 10-15 cm, flat roof shed can be 1.5-1.8 m wide, 10-15 cm high 畦, and then flatten the fine face Open the inner and outer three trenches.
2 cover insect nets and pest control
After doing a good job, cover the pest control net with high-efficiency, low-toxicity and low-residue pesticides such as cypermethrin and enemy killing, and block the insects in the net indoors. Cover the insect nets one week before sowing.
3 timely sowing
Beginning in the middle and late April, choose to plant in batches in sunny afternoon or evening, with a dose of 1-1.5 kg per 667 m2, and lightly press with wooden boards after sowing to facilitate emergence.
4 water and fertilizer management
In water management, timely watering after sowing, pay attention to uniformity and thoroughness when watering, and no water can be accumulated on the surface to ensure uniform emergence. During the growth period, water is timely planted according to plant growth, soil and weather conditions.
When watering, pay attention to the summer when the temperature is low, and the temperature is high in the summer and autumn. After using the insect net, the temperature and temperature in the net are about 1 °C higher than the net outside, especially when the temperature is particularly high in July and August. To increase the number of watering, maintain a certain humidity in the net, to cool down, pay attention to watering in the evening, conditional can promote the application of micro-drip irrigation technology, micro-drip irrigation not only promotes the growth of pakchoi, and Can increase production.
In areas where there is frequent rain or heavy rain in June-September, when there is a lot of rain, the water will be drained in time to prevent the occurrence of diseases during high temperature and high humidity.
In the operation of fertilizer, the growth period of Chinese cabbage is short. In the case of applying base fertilizer, it is generally not topdressed during growth. If the plant growth potential is poor and needs topdressing, it can be combined with watering 667 m2 to apply urea 5-7 kg, or leaf. Spray 0.2%-0.3% potassium dihydrogen phosphate 1-2 times.
2.3, summer and autumn cabbage disease and pest control
1 pest
Covered with insect-proof nets, it is generally not necessary to treat insects during the growth of Chinese cabbage, but it is necessary to close the shed door in time to prevent the pests from flying outside the shed. If insects are found in the net, they can be manually captured or treated with bio-pesticide such as cytosine (fluridine) or Bt emulsifiable concentrate.
2 diseases
The main diseases of Chinese cabbage are downy mildew, soft rot and anthracnose. Spray 25% metalaxyl 600 times solution or 75% chlorothalonil 500 times solution to prevent mildew mildew, use 200 mg/kg agricultural streptomycin to control soft rot, use 64% antivirus 矾500 times solution or 50% Carbendazim 500 times solution to prevent anthrax.
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