How to maintain saplings in dog days

In summer, the temperature is high, the water evaporates quickly, and the soil is prone to water shortage. When the seedlings suffer from drought, they should be watered in time or artificially to soak the seedbed and keep the soil moist.

For general tree species, the nursery soil should be kept moist, and the appropriate irrigation amount should be determined according to the level of groundwater level and rainfall. It should be noted that according to different tree species and different situations, watering should be different:

1. Flowers and shrubs need a lot of water; In contrast, trees need less water than flowering shrubs.

2. Fast-growing seedlings need sufficient water supply. The newly planted seedlings should be watered enough, which can be watered for 2-3 times continuously.

3. The seedlings near the nursery should be watered less or not.

4. Water the sandy soil with poor water retention capacity; Saline-alkali land should be watered with open water.

In addition, loosen the soil in time after watering to protect the soil moisture in the nursery; Watering with moderate humidity can increase the absorption of seedling roots; Adhere to the principle of "seeing dry and seeing wet". In the late stage of seedling growth, except the weather is particularly dry, irrigation is generally not or less.

Second,

Flood control articles

Summer rainfall is concentrated and unevenly distributed, which leads to the coexistence of drought and flood. Therefore, while watering the seedlings, we should also pay attention to flood control.

Nursery, prone to wet and waterlogging disasters, should do a good job of digging ditches and drainage in advance. Dredge ditches to ensure that seedlings do not accumulate water and are not flooded.

Especially in the south, affected by rainy weather, there is more rain and the temperature is unstable. At this stage, the drainage ditch of seedlings should be dredged in time, and irrigation should be done in time after long-term high temperature and drought.

In addition, weed and loosen the soil after the rain; For some drought-tolerant plants, pay attention to drainage when there is more water. For pre-waterlogged nursery, ditches should be dredged in time to eliminate waterlogged silt, and seedlings and soil should be sorted out in time to ensure that the open water is DC and the dark water is straight down.

three

Shading article

Shading in summer is also very important, and the temperature is too high, which is not conducive to seedling growth. After shading, the surface temperature can be reduced by about 65438 00℃. Therefore, where conditions permit, the seedlings should be shaded to facilitate their growth.

For shade-tolerant seedlings and seedlings that have just been cut and transplanted, shading should be carried out according to specific conditions to reduce the adverse effects of high temperature.

Shading nets can be used to reduce the temperature and reduce water evaporation. According to the types of seedlings and their own characteristics, shading nets with shading rate of 40% ~ 60% are generally selected.

four

Weeding article

In summer, seedlings are prone to grow weeds in the field, so weed and loosen the soil in time after each irrigation or rain.

Weed in time after each rain or irrigation, and master the principle of "early weeding, small weeding and large weeding".