1. The pipes and drippers of drip irrigation are easy to be blocked, and the water quality requirements are relatively high, so filters must be installed;
2. The investment in drip irrigation is high, and the economic benefits of crops should be considered;
3. Drip irrigation cannot adjust the microclimate of the field, and is not suitable for irrigation during the freezing period. In vegetable irrigation, drip irrigation system cannot be used to apply manure.
4. The drip irrigation system is easy to combine with the photovoltaic water-lifting system to complete a water-saving irrigation system, which can save water, electricity and energy. The photovoltaic water pumping system can supply power in remote areas without mains electricity, paving the way for the early stage of entering the drip irrigation system.
Technical measures to supplement the water needed by crops. In order to ensure the normal growth of crops and obtain high and stable yields, crops must be supplied with sufficient water. Under natural conditions, often due to insufficient precipitation or uneven distribution, it cannot meet the water requirements of crops. Therefore, artificial irrigation must be carried out to make up for the lack of natural rainfall.
Irrigation means watering the land with water. The principle of irrigation is that the amount, frequency and time of irrigation should be determined according to the water demand characteristics, growth stage, climate and soil conditions of medicinal plants, and irrigation should be timely, appropriate and rational. Its types mainly include irrigation before sowing, seedling irrigation, growing season irrigation and winter irrigation.
English
