Matters needing attention for harvesting leek in greenhouse in early spring

The use of greenhouse cultivation technology in early spring can obtain better benefits, but if excessive production, it is easy to lead to the weakening of leek growth, the decline of quality and so on. This is because the nutritional status of the rhizome of leek is the basis of its growth and sustained high yield, so reasonable harvesting can improve the nutritional status of the rhizome and ensure the good quality and stable yield of leek. So what should we pay attention to in harvesting leek? Come and have a look with the editor.

1. The timing should be appropriate.

The harvest time interval of leek in greenhouse in early spring is generally 30-40 days, which is that most leeks are about 30-40 cm high, the content of various nutrients in the body is also relatively high, and the quality and yield of leek are good. If the harvest is early, the plant height and nutrients accumulate and sow, the yield is low and the flavor is light; but if the harvest is too late, the plant is easy to lodge, the old leaves are easy to yellowing, the risk of disease infection will increase, and the taste of leek will decline day by day. When harvesting, you should choose a sharp and clean sickle, choose to do it in the sunny morning or at night, and harvest after dehumidification in the shed in the morning. It is not suitable to harvest in low temperature and sunny days, because the shed is often low temperature and high humidity, and the leek grows slowly and weakly after harvest, and it is also easy to be infected with diseases.

2. the stubble should be moderate.

Stubble height refers to the distance between the harvest position and the upper end of the leek bulb. The stubble height should be moderate, neither too high nor too low, and 3-4 cm is the most ideal. Judging from the color of the knife edge, the cross section is light yellow, if the color is green, the stubble is too high, and if it is white, the stubble is too low. If the stubble of leek is too high, it will affect the yield and quality of the current stubble; if the stubble is too low, it will not only damage part of the leaf sheath tissue, but also affect the harvest time and yield of the next stubble, reduce the yield of the whole year, and possibly cause premature senescence of the plant and decline in disease resistance.

3. The number of harvests should be appropriate.

The harvest times of leek in greenhouse should be determined according to the growth of the plant, fertilizer and water, the occurrence of diseases and insect pests and the market demand, three times in the whole winter and spring, no more than four times at most, which is beneficial to enhance the stress resistance of the plant. Watering and fertilization should be avoided within a week before harvest, ventilation and moisture drainage should be strengthened, heat preservation should be strengthened after harvest, and fertilization should not be watered before the new leaves grow to 4-5 cm. This can avoid the occurrence of Botrytis cinerea, is conducive to the healthy growth of leek, and promote high and stable yield.

The above is the early spring greenhouse leek harvest points for attention, hope to help you, want to know more related knowledge, please follow us.