The quality of nursery stocks in summer management directly affects the yield and quality of seedlings, so it is necessary to take the following measures: 1. Shading properly For nursery trees and flower seedlings that are too late for seeding, cool down measures should be used during the initial stages of growth. , To reduce the adverse effects of high-temperature heat damage, such as shade shelters, shaded nets can be used conditionally to avoid sunburn hazard seedlings. Second, timely loose soil weeding in each rainfall or irrigation after weeding weeding. Shallow soil should be shallow to keep the topsoil loose to facilitate seedling growth. Weeding should be "in addition to early, except small, in addition to", spreading seedlings inconvenience weeding and loose soil, weeds can be pulled out between the seedlings, and then spread a layer of fine soil on the seedbed to prevent root exposure. Loose soil should be deepened gradually, but care should be taken not to hurt the seedlings or press the seedlings. Third, if the land for flood prevention is relatively low, drainage ditches should be dug ahead of time before the arrival of the rainy season. In the summer drought, irrigation is an important measure to cultivate strong seedlings. When the weather is dry, it is necessary to pay attention to watering and ensure that the seedbed is moist. Fourth, a reasonable top dressing: seedbed fertilization generally use quick-acting fertilizer or decomposed human excreta. The common quick-effect fertilizers in nurseries are grass ash, ammonium sulfate, urea, and superphosphate. The frequency of fertilization should be more and each dose should be less. General seedling growth period can be top dressing 2 to 6 times. The first time should be about 1 month after the seedlings are unearthed, and the top dressing should be applied every 10 days or so. The last time of topdressing should be carried out 1 month before the seedlings stop growing. For conifer species, nitrogen topdressing should be stopped about 30 days before the top of the seedlings. The top dressing should be carried out in accordance with the principle of "from lean to concentrated, a small number of times, timely and appropriate, and ingeniously applied in phases." V. Seedlings are divided between seedlings that are too dense, poorly grown, underdeveloped, injured, and pest-infested, and the “Bawang Miao†that affects the growth of most of the surrounding seedlings. For the broadleaf cutting seedlings, shoots must be picked and removed in time. Sixth, prevention and control of disease and insect seedlings Blight, root rot, etc. can be sprayed against enemy pine or Bordeaux solution, thiophanate-methyl and other drug control. Prevention and treatment of leaf and food bud pests can spray dichlorvos, trichlorfon and other agents. Underground pests such as chafers, cockroaches, cockroaches, etc. can be sprayed with trichlorfon or dimethoate, or diluted with phoxim, and can be used for root control or artificial capture.