March and March Vegetable Production Guidance
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First, greenhouse management
At present, vegetables in greenhouses in Danyang City are mainly spring-early tomatoes, and most of them are planted in greenhouses from late November to January of this year. It is in the period of vegetative growth and flowering. For greenhouse vegetables, mainly to do:
1, insulation and cold.
Continue to do cold work. In particular, the temperature of these two days has dropped again. According to the weather forecast, there is heavy snow today and the lowest temperature in the morning is -4°C. Therefore, the vegetable greenhouses must be kept cold and warm. In addition, the vegetable fields should be cleared around the ditch, and the ditch should be matched to ensure the smooth drainage and drainage, block the holes and cracks in the sheds of the greenhouses, and cover the shade nets, straw curtains or non-woven fabrics at night on small arches. Cloth, increase insulation capacity.
2, good ventilation
In February and March, with the increase of sunshine time, the temperature rose and the humidity in the shed increased. In order to regulate and control the temperature and humidity of the greenhouse and reduce the occurrence of disease damage, greenhouse vegetables must be properly ventilated in the sunny days.
3, do a good job of flower protection and fruit preservation. Low temperature is not easy to set fruit, in the current production of tomatoes in early spring, most of the tomato is used to prevent falling flowers and fruit, such as tomato spirit, anti-dropping agent, the application of plant growth regulators should be used according to the instructions, to prevent the concentration is too high, the occurrence of phytotoxicity and produce Malformed fruit.
4, do pest control work. As the temperature rises and the humidity in the greenhouse increases, vegetables in the greenhouse are susceptible to gray mold, blight, wilt disease, and aphid damage. Pest control should be combined with agricultural control and chemical control, such as cleaning field and roadside weeds, eliminate overwintering pests, rationally fertilize water, timely pruning, removal of disease, old leaves, spraying of pesticides to prevent their counterparts.
Second, open cultivation and management of vegetables
In the first two months of March, the main varieties of vegetables grown in open field were green vegetables, cabbage, broccoli, shiitake, peas, spinach, garlic and other varieties. Fertilization, drainage after rain, and racking of beans were mainly performed. Vegetables that have reached maturity, such as vegetables, cauliflower, cabbage, radish, garlic, celery, spinach, wolfberry, garland chrysanthemum, etc., must be timely harvested and marketed.
2. For the cultivation of cruciferous vegetables (such as Chinese cabbage, vegetables, radish, etc.), we must do top-dressing and field miscellaneous work to ensure seed purity and quality.
3, vegetables, cabbage, late spring lettuce and spring flowers, can be colonized one after another, mulching cultivation.
Third, do a good job in the season sowing seedlings and various preparations: such as plugs, seeds, nutrient soil, the preparation of the substrate, transplanting field preparations. The varieties of vegetables planted in nurseries at present are mainly: Solanum (tomato, eggplant, pepper); melons (cucumber, loofah, watermelon, melon, melon melon, wax gourd, zucchini), leeks, spring radish, early soybeans, etc. Live vegetables such as green vegetables, spring cabbage, spinach, celery, garland chrysanthemum, etc. can be broadcast lively. In late March, it is also possible to expose legumes to live beans.