Why bitter melon plugs are not good

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In a few days, the cucumber seedlings ordered by Zhang Master, Zhangjiazhaizi Village, Sunjiaji Street, Shouguang City, will be delivered. The bitter gourd and the cucumber are planted together. The cucumbers are picked at winter and harvested in the spring.

“A lot of people told me this year to have bitter gourd seedlings. Their bitter gourd seedlings have a relatively low emergence rate this year, and they are not enough.” In Master Zhang’s greenhouse, he fills the substrate with a substrate and prepares to transplant seedlings. The reporter said, “Before and after these two sheds are seedlings planted with plugs, I am directly bred in the shed. Their seedlings are not well developed, and I am very neat. I feel that bitter gourd is not suitable for the use of plugs. Nursery."

The reporter ran before and after the two greenhouses and found that the seedling rate of bitter gourd seedlings was greatly reduced. The 50-hole plug could reach 40 trees even if they were good. The seedling rate was less than 80%; and Master Zhang’s bitter gourd was fundamental. Not so much trouble, the direct cultivation in the shed, but the emergence rate of nearly 100%. Why is this?

Master Zhang believes that bitter gourd has a relatively long emergence period. If seedlings are cultivated with plugs, the management of conditions such as moisture and temperature is difficult, but it is not good.

The first is that the water for plug seedlings changes quickly. Bitter gourd germinates need higher humidity, but the permeability of seedlings with plug-in substrate is good, but it has poor water retention and dryness. Therefore, it takes one day to pour water once and the humidity changes greatly. Sometimes people are busy or even forget to water. Causes the tray to dry and damp, which is bad for germination. In the soil, although the seedlings grow for a long time, due to good water retention, the humidity does not change much, so it can ensure that germination is not affected.

The second is the dramatic temperature change in the plug. After the greenhouse was replaced with a new film, the light transmittance was good, and the temperature in the shed was high at noon. In order to reduce the evaporation of water and maintain the humidity, the seedlings are often covered with mulching film, which leads to high temperatures in the plug tray during the day, which may affect the seedling emergence. If the membrane is forgotten to be removed, the seed may even be “steamed” and the seedling emergence rate will be reduced. .

Therefore, for vegetables such as bitter gourd and melon, which are difficult to emerge and have a long seedling age, it is not suitable to use seedlings for seedlings, or it is better to use conventional seedlings for nutrition.


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