Where is lettuce grown? An introduction to the distribution of major production areas nationwide

Lettuce has strong adaptability and can be cultivated in spring and autumn or overwintered, with spring cultivation being the main method and harvest in summer. It is one of the most common vegetables on the dining table, but do you know where lettuce is grown? Now let us take a look together!

The production area distribution of lettuce

Lettuce originated along the Mediterranean coast and was introduced into China around the early 7th century, and it is widely cultivated in various places.

The growth habits of lettuce

Lettuce is sensitive to the acidity and alkalinity of the soil and is suitable for planting in slightly acidic soil. Lettuce has a shallow root system and weak absorption capacity, and has a relatively high demand for oxygen. Sandy loam and loam are best for growing lettuce.

The growth cycle of lettuce

The entire growth process of lettuce includes the seed germination stage, seedling stage, rosette stage, fleshy stem formation stage and flowering and fruiting stage. The growth cycle of lettuce is about 80-100 days, and it can be divided into the following stages:

1. Germination stage: from sowing to the appearance of true leaves, requiring 8-10 days.

2. Seedling stage: from the appearance of true leaves to the partial unfolding of 5 or 8 leaves of the first phyllotaxis. Direct sowing requires 17-27 days; raising seedlings requires more than 30 days

3. Rosette stage: from “plant clustering” to the full unfolding of the third phyllotaxis, with the heart leaves level with the outer leaves, requiring 20-30 days

4. Fleshy stem formation stage: the stem expands rapidly and the leaf area expands rapidly, requiring about 30 days. Pea pods: the shoots can be picked 30 days after sowing.