The latest management skills of soybean at seedling stage

If soybean wants to obtain high yield, planting well is the foundation, and management is the key, especially the seedling stage management is the top priority to determine the yield. The seedling stage management goal is to be uniform and strong. So how to manage the soybean seedling stage? Come and have a look with the editor.

1. Check seedlings and replant

Soybean seedlings should be checked and replanted immediately after emergence, and seeds of the same variety should be soaked in time after the lack of seedlings, or transplant seedlings with soil. Broken ridge more than 30 cm should be replanted or replanted, while those with a lack of ridge less than 30 cm can leave double plants at both ends of the broken ridge, no longer replanting.

2. The seedlings are fixed

The inter-seedling work was carried out when the soybean cotyledons were unfolded, and the seedlings were fixed when the first compound leaf appeared, and the remaining seedling density was determined by soil fertility and variety. If the row spacing is 40 cm, the planned density of 15 seedlings per meter of 25000 plants, 9 plants per meter of 15000 plants and 24 plants per meter of 35000 plants.

3. Scientific topdressing

Improper fertilization of soybean will cause excessive growth and lodging of seedlings, resulting in a decrease in yield in the later stage, so the principle of topdressing in the seedling stage is to apply phosphorus and potassium fertilizer in the early stage and appropriate nitrogen fertilizer in the later stage. Generally, 10 kg 45% compound fertilizer per mu is applied after the seedling is fixed, and 5 kg urea per mu is applied at the podding stage. If the seedling is too prosperous, the topdressing can be applied less or not for the first time.

4. Pest control

The podding period of spring soybean is in a high-temperature and rainy climate, and soybean purple spot and downy mildew are very easy to occur. 85% ethamyl or DuPont Kelou 100 grams and 50 kg water can be used for foliar control. The main pests are aphids, red spiders, bean flies, etc., can be used 40% omethoate or phoxim 50 ml, add about 40 kg of water spray control.

5. Drought resistance and waterlogging drainage

Soybean seedling stage should pay attention to water management, water shortage will seriously affect its growth, and may even die of water shortage, but the seedling stage is a rainy season, so it is very easy to become waterlogged, so it is also necessary to prevent waterlogging damage in the seedling stage, so as to avoid root rot and cause a large area of plant death.

The above is the introduction of soybean seedling management skills, hope to help you, want to know more related knowledge, please follow us.