Management techniques of balsam pear at seedling stage

Balsam pear planting must first raise seedlings, the main purpose of raising seedlings is to cultivate high-quality strong seedlings, in order to further ensure the future growth of balsam pear, but also the premise of high yield, how to cultivate a weak disease seedling can not catch up with the good seedlings at the beginning, so the seedling stage should be fine management to ensure that the seedlings are strong seedlings, management for balsam pear also has some special management requirements, then let's take a look at it now.

First, heat preservation

Seedling emergence needs to maintain enough temperature, about 20 to 25 degrees during the day, 15 to 18 degrees at night, the temperature is too high, the seedlings are easy to grow, there will be tall seedlings, the stem is very long, but the leaves do not follow the growth of the stem, such seedlings are easy to lodge. When the seedlings emerge to about two weeks, the temperature can drop to 20 to 23 degrees during the day and above 10 degrees and below 15 degrees at night.

Second, fertilizer and water

The seedlings need sufficient water, but they must control the humidity, the humidity is too high, and the seedlings are still small, so they are prone to a variety of seedling diseases. Therefore, the seedling shed needs timely ventilation after watering, so that the humidity of the environment can not be too high. Water about once every 5 days, not too many times. Seedlings need to apply light fertilizer and water, the concentration of meltwater fertilizer is relatively low, and the fertilizer effect is not heavy, will not hurt the roots, will not grow too much nutrition. In addition to base fertilizer, you can chase light fertilizer or spray foliar fertilizer.

Third, refining seedlings

It is necessary to refine the seedlings a week before transplanting to the field to exercise the adaptability of the seedlings, the ability to resist heat and drought, and adapt to the external climate as early as possible. Ventilation gradually begins during the day, and it can be removed at last, but it must be kept warm at night, shade the light, and only use a greenhouse for seedlings, and then increase the soil to maintain soil moisture.

4. Weeding and loosening the soil

After the seedlings are unearthed, there is more watering before, and the soil is relatively rigid, so use a small stick to gently loosen the soil on the whole seedbed, not too deep, at the beginning of the interval, loosen the soil 2 to 3 centimeters. But the seedling tray can not loosen the soil and absolutely hurt the roots. Weeds should be pulled out in time when they are found, and at the seedling stage.

5. Prevention and control of diseases

The main diseases are quenching disease, this disease harms a variety of vegetables, from seedlings to adult plants, mainly occurs in the seedling stage, after infection, the base of seedling stems turn brown and rot, lodging directly, which is a devastating disease. Use 800 times solution of 25% Ruidu wettable powder or 500 times solution of 60% germicidal alum wettable powder. The occurrence of blight is relatively scattered, but the disease is serious. After infection, the seedlings will first appear disease spots, then gradually expand, and finally die. 1000 times of Jinggangmycin aqueous solution was used once every 3 days for 2 consecutive times.

Balsam pear seedlings need heat preservation, maintain a suitable temperature, to promote the growth of seedlings, but not only grow, in addition to base fertilizer less topdressing, prevent overgrowth. Loosening soil and weeding can help growth. Seedlings must be refined before transplanting to avoid transplanting dead seedlings and focus on preventing sudden collapse.