Lettuce: The temperature should be between 15 and 25 ° C, and hydroponics should be suitable for loose leaf lettuce varieties.
Spinach: the hydroponic period needs to be appropriately added nutrient solution, and the disease resistance of hydroponic varieties should be good.
Cress: It is more suitable for hydroponics, because the taste of hydroponics is better than that of soil culture.
Rapeseed: during the hydroponic period, the water should be changed frequently to ensure that the water quality is clean and more sunlight is seen.
Amaranth: ensure that the environment is warm, and the suitable water quality temperature is between 20 and 27 ° C.
Other varieties: kale, beet, black cabbage, bitter lettuce, Jingshui vegetable, etc.
First, lettuce
Hydroponic lettuce is very common, the best growth temperature is between 15 and 25 ° C, the temperature can not be too high or too low, below 15 ° C, the growth will become slower, the temperature is higher than 30 ° C, it will grow poorly. Hydroponics is best in winter and spring, and it is also necessary to select a good variety when hydroponic, which is suitable for hydroponics using loose leaf lettuce varieties.
Second, spinach
When hydroponic spinach, pay attention to the addition of nutrient solution, but the concentration of nutrient solution is not too high, you can appropriately increase the concentration of nutrient solution as it continues to grow, otherwise spinach growth will be poor due to lack of nutrition. When hydroponic spinach, a suitable variety should be selected, and a variety with good disease resistance and strong pumping resistance should be appropriate.
3. Cress
Compared with other vegetables, cress is more suitable for hydroponics, so the taste of hydroponics is better than that of soil culture. When hydroponic cress, cress seedlings with intact roots should be selected so that cress growth can be better. Do not be dehydrated during hydroponics, and the nutrient solution should be supplied, but the concentration should not be too high.
Fourth, rapeseed
In the time of hydroponic rapeseed, you can use glass bottles, mineral water, so that you can easily change the water, during the maintenance period need to change the water frequently, you can change the water once every 5-7 days, the water quality should be clean. The suitable temperature for water cultivation is between 12 and 25 °C, and provides sufficient light to the plant.
5. Amaranth
Amaranth can also be hydroponically planted, but it needs to master a certain hydroponic technology, it likes to grow in a warm environment, heat-resistant, the appropriate growth temperature is between 20 and 27 ° C, when the temperature is lower than 20 ° C, the growth will become slower. If the temperature is below 10 °C, it will be difficult for the seeds to germinate.
6. Other varieties
There are many varieties of hydroponic vegetables, including kale, beets, black cabbage, dwarf tomatoes, chaotian peppers, fungus, purple-backed skyflower, hollow cabbage, leeks, garlic seedlings, oil wheat vegetables, cherry radish, leaf beets, koji, bitter lettuce, Jingshui vegetables, apples, watercress, etc., and can also be hydroponic melons, cucumbers, etc.