Before and after vegetable planting, the environmental conditions of the nursery shed and the ordinary shed are obviously different, and the seedlings before and after planting are more damaged, which is a good opportunity for pathogen infection. Moreover, after the early spring vegetables are planted, the speed of slowing down the seedlings directly determines the time and yield of the early spring vegetables on the market. How to do a good job of planting is the basis for the efficiency of vegetable production.
Ridging and planting
M-shaped ridges are 20 cm high. It is better for seedlings to be planted on the shoulders of the ridges, which not only helps to increase the ground temperature and promote the growth of the root system, but also helps to improve the permeability of the soil and increase the activity of the root system.
Planting water
If it is furrow watering, water should be watered in advance, and the seedlings should be planted above the water line to avoid the spread of pathogens with water and reduce the occurrence of rhizome diseases. If it is drip irrigation, the drip irrigation belt should be close to the planting hole. The first water can only wet the surroundings of the planting hole to reduce the influence of water on ventilation and ground temperature.
Colonization method
Plant as shallow as possible, and planting should be exposed. If the seedlings are taller, they can be buried in the soil at an angle. To take seedlings from plug trays, you can squeeze the holes first to facilitate the taking of seedlings and reduce the damage to the stalks when taking seedlings. ******Choosing continuous sunny days is conducive to rapid slowing down of seedlings and reducing diseases.
Colonization density
Different vegetables have different planting densities. Take tomatoes as an example. In Shouguang, Shandong, 2200～2500 plants per mu are usually planted in greenhouses. Varieties with single stem pruning, strong growth, large leaves, and more fruits are reasonably sparsely planted, weak growth, small leaves, and fruit retention. Few varieties are planted closely. If the row spacing is 1.35 meters, the plant spacing is generally 41 to 42 cm. In some areas of Hebei, Henan and other places, there are only 3 ears of tomatoes in early spring, and the planting density is generally above 3,000.
Dip root treatment
The recommended formula for root diseases: 30 kg of water with 20 ml of hymexazol, a bag of 968 Dip Genbao, and 30 ml of Apollo 963 chitin.
Nematode recommended formula: 30 kg of water plus 20 ml of abamectin, 30 ml of Apollo 963 chitin, and Paecilomyces lilacinus biological agent.
Planting 6-10 hours after dipping the roots, in addition to dipping the roots, you can also apply biological inoculants to the holes.
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