Precautions for Harvesting Greenhouse Chives in Early Spring

Using greenhouse cultivation techniques in early spring can yield relatively good returns, but excessive production can easily lead to weakened chive growth and reduced quality. This is because the nutritional status of the chive rhizome is the foundation of its growth and sustained high yield, so reasonable harvesting can improve the nutritional status of the rhizome, ensuring excellent chive quality and stable yield. So what should be noted when harvesting chives? Let's take a look together.

1. Timing should be appropriate

The harvesting interval for greenhouse chives in early spring is generally 30-40 days. At this time, most chives are about 30-40 cm tall, and the content of various nutrients in the plant is relatively high, so both the quality and yield of the chives are relatively good. If harvested too early, the plant height and nutrient accumulation are insufficient, the yield is lower, and the flavor is weaker; but if harvested too late, the plants are very prone to lodging, the old leaves tend to yellow, the risk of disease infection increases, and the taste of the chives will gradually decline. When harvesting, choose a sharp, clean sickle, and choose to do it on a sunny morning or evening, preferably after the moisture in the greenhouse has been vented in the morning. It is not advisable to harvest on days with low temperature and scarce sunlight, because at such times the greenhouse tends to have low temperature and high humidity, and after harvesting the chives grow slowly, their growth is weak, and they are also very prone to disease infection.

2. Stubble height should be moderate

Stubble height refers to the distance between the harvesting position and the upper end of the chive bulb. The stubble height should be moderate, neither too high nor too low, with 3-4 cm being the most ideal. Judging from the color of the cut, a light yellow cross-section is preferable; if the color is more green, it indicates the stubble is too high, and if it is more white, it indicates the stubble is too low. If the stubble is too high, it will affect the yield and quality of the current crop; if the stubble is too low, it can easily damage the meristem at the base of the leaf sheath, and will also affect the harvest time and yield of the next crop, causing the annual yield to decline, and may also cause premature aging of the plants and reduced disease resistance.

3. Number of harvests should be appropriate

The number of harvests for greenhouse chives should be determined according to the plant's growth, fertilizer and water conditions, pest and disease occurrence, and market demand. Throughout the winter and spring, three times is appropriate, and no more than four times at most, as this helps enhance the plants' stress resistance. Within one week before harvesting, watering and fertilizing should be avoided, and ventilation and moisture removal should be strengthened. After harvesting, insulation should be strengthened, and watering and fertilizing should not be done before the new leaves grow to 4-5 cm. In this way, the occurrence of chive gray mold can be excellently avoided, which is beneficial to healthy chive growth and promotes high and stable yield.

The above is an introduction to the precautions for harvesting greenhouse chives in early spring. We hope it can help you. To learn more related knowledge, please stay tuned to us.