In the beginning of summer, the temperature will rise significantly and the crops will enter the growing season. At this time, land vegetables are prone to insect pests, and greenhouse vegetables are prone to premature aging. This is a critical period for the growth of vegetables. It is of utmost importance that appropriate protective measures be taken.
1, land vegetables should pay attention to pest control. At this time, the general principle of pest control is: to prevent the main, integrated control.
Agricultural control mainly involves the selection of new disease-resistant varieties, seed disinfection, and field operations to prevent and control pests and diseases. Through these measures, the source of bacteria can be suppressed and eliminated, and the incidence rate can be reduced.
Ecological control mainly utilizes different environments for the growth and development of crops and pathogens, and controls the spread of pests and diseases through measures such as air release, humidity removal, temperature reduction, and ditching.
Biological control is a method of using natural enemies or biological pesticides to control pests and diseases.
Physical control is the use of physical methods to isolate, kill or repel pests and pests, and to prevent and control pests and diseases.
Chemical control is the use of chemical pesticides for foliar spray or irrigation. However, high-toxicity, high-residue pesticides cannot be used, and only low-toxicity, low-residue pesticides can be used.
2, for the greenhouse and greenhouse vegetables also need to strengthen management. Greenhouses and greenhouse vegetables have entered the late stage of management. At this time, we must prevent premature plant failure, strengthen fertilizer and water management, promote the maturity of fruits and vegetables, and timely harvest. Especially in the case of low organic fertilizer, nutritional supplements should be promptly avoided to prevent premature plant failure, resulting in a reduction in vegetable production.
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