How to manage nursery base

Although irrigation summer is rainy season, there are often unstable weather such as drought first and then waterlogging or drought first and then overcast. Therefore, the seedlings should be irrigated in time during the drought period. Irrigation in the fast-growing period of seedlings should adopt the method of multiple times and less times, and each time it should be watered thoroughly; In the later stage of seedling growth, unless the weather is particularly dry, irrigation is generally not needed. All ditch support systems in the nursery must be excavated before the rainy season, so as to drain water and reduce waterlogging in time and ensure the normal growth of seedlings. After the nursery is flooded, it is necessary to dredge the ditches in time, eliminate the waterlogged silt, and arrange the seedlings and soil in time, so that the open water will flow directly and the dark water will fall straight, and then weed and loosen the soil after the seedlings come back to life.

Weeds often grow in nurseries in summer. Weed and loosen the soil after each irrigation or rain. Weeding should master the principle of "early weeding, small weeding and large weeding". Loosen the soil gradually and fully to ensure that the seedlings are not damaged or crushed. Sowing seedlings is inconvenient to loosen the soil, so weeds among seedlings can be pulled out and a layer of fine soil can be spread on the surface of the seedbed to prevent root exposure and wind from affecting the growth of seedlings.

Due to climate, soil, heredity and other factors, some bud-controlling tree species only have lateral buds and roots at seedling stage, which is not conducive to cultivating strong seedlings. Therefore, it is necessary to pick buds and tiller in time, control the number of lateral roots and improve the quality of seedlings.

Summer topdressing and quick-acting fertilizer can be applied through furrowing between rows. The depth of the ditch should be appropriate, fertilize the ditch, and then cover the soil. Topdressing should be carried out when the seedlings grow lateral roots, and it is advisable to carry out it after 3 pm. Be careful not to touch the thick fertilizer on the seedlings when fertilizing. According to different seedling varieties, arrange topdressing time. Generally, conifers should stop topdressing 30 days before the seedlings are capped. Broadleaf trees should be topdressed before autumn.

Prevention of pests and diseases With the growth of seedlings, pests and diseases will attack seedlings at any time. Diseases and pests of seedlings are generally mainly prevented, so it is necessary to make a good forecast of diseases and pests, prevent possible diseases and pests, and eliminate the diseases and pests that have occurred in time.