黑龙江体彩61开奖时间 www.ewlqe.icu Irrigation and fertilization are suitable for many crops. According to the characteristics of this technology, combined with agricultural production and natural resource distribution in China. The main crop targets for irrigation and fertilization technology are as follows:
Fruit trees: grapes, apples, pears, peaches, kiwifruit, blueberries, cherries, pitayas, chestnuts, ginkgo, citrus, etc. vegetables and melons: tomatoes, peppers, eggplants, rape, celery, lettuce, cucumber, watermelon, melon, mushrooms, mushrooms, mushrooms, flammulina velutipes, etc.
Flowers: roses, gladiolus, lilies, etc.
Medicinal materials: ginseng, notoginseng, chonglou, dendrobium, etc. In addition, gardens, green spaces, nurseries and tea gardens are all suitable for irrigation and fertilization.
The second category: cash crops such as fields and cotton.
What are the precautions?
1. Be sure to install filters. Water must be filtered to avoid impurities blocking the pipeline, which is the key to the normal operation of the system, filters should be cleaned regularly.
2. Before applying fertilizer, first open the switch in the fertilization area for irrigation. Then dissolve the fertilizer in the fertilizer pool and start fertilizing 20 minutes later. The time of fertilization in each area is about 30-60 minutes, and the speed and time of fertilization are regulated by switch.
3. After fertilization, the system can not be shut down immediately. Sufficient time should be guaranteed to flush the pipeline, which is an important measure to prevent system blockage. The flushing time is related to the size of the irrigation area, usually 15-30 minutes, and the fertilizer in the pipeline is discharged completely. Otherwise, algae, moss, microorganisms and other large-scale reproduction, blocking the system.
4. Choose fertilizers with good solubility.
5. Appropriate adjustment of fertilizer application. For the first users of the system, the amount of fertilizer applied is adjusted on the basis of previous years, and then fertilized by "a small number of times".
6. Frequently go to the field to check whether there are leaks, blockages, broken pipes, cracked pipes and other phenomena, timely maintenance of the system.