Selection of water quality for watering flowers
Natural moisture is hard water and soft water. Hard water contains high mineral salt, and long-term irrigation will have adverse effects on flower growth. Soft water is an ideal water for watering flowers because of its low mineral salt content. Rainwater, river water and lake water have low hardness and can be directly used for watering, while groundwater such as spring water and well water has high hardness and cannot be directly used for watering flowers. Tap water should not be used directly because it contains chlorine and other disinfection substances. It is best to store it in open containers such as tanks and pools for 3 ~ 5 days, and then use it after the harmful substances in the water evaporate and precipitate.
Water the roots well.
The first watering after planting is called root water. Rooting water must be poured thoroughly. Because the initial planting soil has not completely settled, there are many gaps in the soil, and only after watering can the soil and roots be fully combined. Generally, it should be watered twice continuously after planting. After the first watering, the water will dry up, and after the water flows out of the hole at the bottom of the basin, it will be watered again, so as to ensure that the soil is fully absorbed and closely connected with the root system.
When watering, most flowers are sprayed. It can not only increase the humidity of the air, but also wash away the dust on the leaves. But for flowers with fluffy leaves or flowers in full bloom, you can't spray water. Instead, you should put the flowerpot in the pot and use the holes in the bottom of the pot to moisten the soil.
Potted flowers have strong respiration in summer, which requires good permeability of potted soil. Therefore, it is not advisable to water the basin soil when it is not dry, so as to avoid too much moisture affecting the air permeability, but it should be watered immediately after drying and must be thoroughly watered. In summer, the pot soil often cracks because it is too dry, so watering can't be done at one time, otherwise the water will leak straight to the bottom of the pot along the gap, and most of the pot soil is still very dry. Wait a while after the first watering, and then water it again after the soil joint is closed.
If you forget to water the plants for many days, which leads to drought and wilting, don't rush to water the potted plants. First, move the potted plant to a cool and ventilated place, spray water on the leaves for 2 ~ 3 times with a watering can, then pour a little water after the leaves recover, and then thoroughly water after the roots recover their water absorption function.
Water carefully in midsummer and winter.
Water temperature has a direct effect on the physiological activities of flower roots. If the difference between the water temperature and the soil temperature is too large (above 5℃), the soil temperature will change suddenly after watering, which will harm the roots, but will affect the absorption of water by the roots and produce physiological drought. Therefore, it is best to irrigate when the water temperature is close to the soil temperature, especially in winter and summer. It is best to store water indoors for a period of time in winter, or add warm water slightly to raise the water temperature to 15 ~ 20℃ before watering. Avoid watering in the hot sun and at noon in summer.
Watering time
The watering time should be chosen as close as possible to the soil temperature. Under normal circumstances, the difference between water temperature and soil temperature is within 5℃, so it is safer to water flowers and the roots will not be damaged. Specific to the daily watering time, spring, summer, autumn and winter are also different.
Spring, autumn and winter, around 10 in the morning and after 4: 00 in the afternoon are the suitable time for watering flowers. At noon in midsummer, the temperature is very high, and the temperature of flowers and leaves can often be as high as 40℃, with strong transpiration and rapid evaporation of water. Roots need to constantly absorb water to supplement the loss of transpiration on leaves. If cold water is poured at this time, although water is added to the pot soil, the root hairs will be stimulated by low temperature due to the sudden drop of soil temperature, which immediately hinders the normal absorption of water. At this time, because there is no preparation in the flower, the stomata on the leaf surface are not closed, and the balance between supply and demand of water is lost, which leads to the change of leaf cells from nervous state to wilting state, which makes the plant appear "physiological drought" and the leaves are burnt, which will cause the whole plant to die in severe cases.
This phenomenon is particularly obvious in herbaceous flowers, such as geranium, dill and aster. What are the most taboo to splash cold water at noon on a hot day? Therefore, don't water the flowers at noon in hot summer. In the same way, the temperature difference between morning and evening in winter is large, so it is necessary to water the flowers at noon when the soil temperature is close to the air temperature. Many flower farmers are used to watering at night and mistakenly think it is the best. In fact, on the contrary, especially in winter or indoors, if they water at night, the water will slowly lose, which will increase the humidity of the soil and air in the basin and easily lead to flower infection and freezing injury.