What medicine should be sprayed for garden greening seedling diseases and insect pests?

Summer is a critical period for seedling growth and management. The management of nursery seedlings in summer directly affects the yield and quality of seedlings, so the following measures should be taken:

1, loosen the soil and weed in time after each rainfall or irrigation. The loose soil should be shallow and the topsoil should be loose to facilitate the growth of seedlings. Weeding should be "early weeding, small weeding and big weeding", and sowing seedlings is not convenient for weeding and loosening the soil. Weeds between seedlings can be pulled out, and then a layer of fine soil is spread on the seedbed to prevent the root system from being exposed. Loosening should be carried out one by one. It is estimated that Taichang County will deepen, but care should be taken not to hurt or crush the seedlings.

2. Appropriate shading measures should be taken to reduce the adverse effects of high temperature and heat damage in the early growth stage of shade-tolerant tree species and flower seedlings with too late sowing date, such as building shade sheds. If possible, you can use a sunshade net to prevent the sun from burning the seedlings.

3. If the plot used as a flood control bed is low-lying, before the rainy season comes, the drainage ditch should be dug in advance and drained in time. In the case of drought in summer, irrigation is an important measure to cultivate strong seedlings. When the weather is dry, pay attention to watering to ensure that the seedbed is wet.

4. It is necessary to remove the seedlings that are too dense, stunted, underdeveloped, injured, and have pests and diseases, as well as the "overlord seedlings" that affect the growth of most surrounding seedlings. When cutting broadleaf trees to raise seedlings, buds should be picked and tillered in time.

5, prevention and control of diseases and insect pests, seedling blight, root rot, etc. It can be sprayed with Givo ethylicin and Chunyu 1 for control or root irrigation. Insecticides such as Catcher and emamectin benzoate can be sprayed to control leaf-eating and bud-eating pests. Underground pests, such as grubs and crickets. It can be controlled by spraying green pepper or artificial capture.

6. Rational topdressing: Quick-acting fertilizer or decomposed human excrement and urine are generally used for seedbed fertilization. The quick-acting fertilizers commonly used in nursery are plant ash, ammonium sulfate, urea and calcium superphosphate. Fertilize more times and use less each time. Generally, topdressing can be done 2 ~ 6 times during the seedling growth period. The first time should be around 1 month after the seedlings are unearthed, and then topdressing every 1 day 1 time, and the last topdressing time should be before the seedlings stop growing1month. For coniferous species, topdressing nitrogen fertilizer should be stopped about 30 days before the seedlings are capped. Topdressing should be carried out in accordance with the principle of "from thin to thick, a small amount for many times, timely and appropriate, and skillful application by stages".