The influence of soil condition on flower irrigation and the methods of flower conservation

Plant roots absorb nutrients and water needed for growth and development from the soil, and the best quality flowers can be obtained only when the physical and chemical properties of the soil can meet the requirements of water, fertilizer, ventilation and temperature for the growth and development of ornamental plants.

The properties of soil affect irrigation, and loam is easy to manage. The excellent garden soil has strong water-holding capacity, and the excess water is easy to discharge. Clay has strong water-holding capacity, but its pores are small, water infiltration is slow, irrigation is easy to cause loss, and it will also affect the absorption of oxygen by flower roots and cause soil consolidation. The irrigation times of loose soil should be more than that of heavy clay, so attention should be paid to the management of dry and wet clay to provide enough water for flowers and dry to increase the air content of the soil. The larger the sand particle is, the worse the water holding capacity is. According to rough calculation, the water holding capacity of sandy soil after 30cm is only 0.6cm, sandy loam 2.0cm, fine sandy soil 3.2cm, while silty sandy soil, clay loam and clay can hold water up to 6.3~7.6cm. Therefore, different soils need different amount of irrigation.

Poor soil properties or improper management is often one of the factors leading to water shortage of flowers. The increase of organic matter in soil is beneficial to soil aeration and water holding capacity.

The amount of irrigation depends on the quality of the soil, and it is appropriate to infiltrate the root zone. Excessive irrigation times and amount of irrigation will lead to poor root growth of flowers, resulting in damage, root rot and plant death in serious cases. In addition, insufficient irrigation, water can not penetrate the bottom, often make the root distribution shallow, which will greatly reduce the resistance of flowers to drought and high temperature. Therefore, the time needed for soil drying between two irrigation should be fully grasped.

When the topsoil is shallow and there is a clay plate below, the amount of irrigation each time should be less, but the number of times should be increased; if the soil layer is deep sandy loam, irrigation should be fully irrigated at one time, and then be irrigated after it is dry. The infiltration of clay water is slow, and the irrigation time should be extended appropriately, and it is best to use intermittent mode, leaving infiltration period, such as irrigation 10min, stop irrigation 20min, reirrigation 10min and so on, which is the common way of sprinkler irrigation, especially in case of high temperature and drought, and the site should be leveled in advance to prevent soil and water loss.