When planting big seedlings in abnormal seasons, it is very important to follow closely. Here we recommend an economical and applicable stubble-following method: hard container seedling raising method in summer. This method is to create conditions in advance, cut off roots during dormancy, and plant them in containers for maintenance, such as wooden boxes, wicker baskets, flower pots, etc. During the growing season, that is, during the construction period, according to the container conditions, do not leave or take down the container to plant in the field. Its characteristics are high reliability, simple management and strong operability. For large evergreen trees such as Cedar 6-7 meters and Pinus tabulaeformis 5-6 meters, a series of special measures have been taken, such as wrapping hemp in large soil and planting it in the morning and evening.

Measure 1: High temperature in summer is easy to lose water, reaching 40 degrees in 2000, even if container seedling raising technology is used. On the issue of seedling entry time, it is mainly in the morning and evening, and the construction quantity should be increased in rainy days. On sunny days, newly planted trees should be sprayed with water twice a day, preferably before 9 am and after 4 pm, to ensure the water needed for plant transpiration.

Measure 2: All transplanted seedlings have been damaged by root cutting, even if they are pruned before entering the container, the original tree potential has been weakened. In order to restore the original tree potential and expand the crown, measures should be taken to restore the damaged root system and promote the root growth. Apply root powder apt3 at a concentration of 1000ppm. After construction, drill a hole around the mound with hard tools, the hole depth is 65438+ 0/3 of the mound, and then water it.

Measure 3: Build a sunshade. Build a tic-tac-toe frame with bamboo or steel pipe, and cover it with a sunshade net. You must pay attention to keeping a certain distance between the net and the planted tree to facilitate air circulation.