Points for attention in raising seedlings of Sweet Potato in early Spring

Sweet potato seedling in early spring is the first step of sweet potato production, because the quality of seedling caused by the problem occurs more commonly, seriously affecting the subsequent growth and yield of sweet potato. Therefore, we should vigorously do a good job in sweet potato seedling work. Let's take a look at the precautions for sweet potato seedling in early spring together with Xiaobian.

1. Building seedbeds

Greenhouse should be built early before sweet potato seedling to promote ground temperature rise, seedbed construction should choose new plots without planting (or seedling) sweet potato. If it is a fixed seedbed, new soil or matrix free of diseases and insect pests should be used. Fungicides and pesticides should be used to fully disinfect the seedbed to prevent nematode disease, black spot disease, black mole disease and other hazards.

2, timely seeding seedlings

Before planting seedlings, we must first present high-efficiency varieties, introduce them and consider the local environment and climate to avoid losses. Sweet potato planting time in early March to mid-April, from seeding to cutting seedlings about 35 days. And the recent temperature is relatively low, but also to prevent the harm of late spring cold, in the potato row to choose a higher temperature sunny day, to prevent freezing. If the weather after the bell is cooled, it is not suitable for watering. One or two layers of small arches can be covered to increase the temperature of the seedbed and prevent rotten beds.

3. Selection of virus-free seed potatoes

For sweet potato with leaf roll and other virus diseases in last year's sweet potato reproduction, seed potatoes must not be used. Virus-free seed potatoes should be selected to prevent leaf roll and virus diseases and ensure yield and quality. Seed potatoes used for seedling should be selected to have the characteristics of garden varieties, no diseases and insect pests, no wounds, no freezing damage, waterlogging damage and mechanical damage, and moderate potato size. Seed potatoes can be disinfected by soaking in warm water or chemical agents, or by concentrated high temperature germination, seeding after germination, and applying phoxim to prevent sweet potato stem nematode disease.

4. Strengthen seedling management

Sweet potato low temperature growth temperature is 16 degrees, suitable growth temperature is between 25-35 degrees, humidity is about 80%, when the sweet potato seedlings grow to 25 cm, the temperature drops to about 20 degrees, and the seedlings are tempered for 2-3 days. Stubble about 3 cm, high cutting seedlings, not plucking seedlings, then use clean soil, add rooting agent, fungicide, pesticide and water into emulsion slurry, dip the base of potato seedlings in slurry, conducive to rooting slow seedlings, pest control.

The above is the introduction of sweet potato early spring seedling precautions, I hope to help you, want to know more about the relevant knowledge, please pay attention to us.