So it can grow.
The underground stem of bamboo (commonly known as bamboo whip) grows horizontally, with a little hollow in the middle, nodes and many dense nodes, and many fibrous roots and buds grow on the nodes. Some buds develop into bamboo shoots that drill out of the ground and grow into bamboo, while others do not grow out of the ground, but grow horizontally and develop into new underground stems. Therefore, bamboo grows in patches and forests. Tender bamboo whips and bamboo shoots are edible. In autumn and winter, bamboo shoots have not yet grown out of the ground, so digging them out is called winter bamboo shoots; In spring, bamboo shoots grow on the ground and are called spring shoots. Winter bamboo shoots and spring bamboo shoots are common foods in China cuisine. In spring, bamboo shoots wait for the spring rain in dry soil. If there is a soaking rain, bamboo shoots will grow out of the ground at a fast speed.
Winter bamboo shoots developed from the lateral buds of underground stems (bamboo whips) of Phyllostachys pubescens around beginning of autumn.
We should "look at four things" when digging winter bamboo shoots.
Look at the conditions of the forest land: from the bamboo forest topography, there are more winter bamboo shoots in the bamboo forest land facing south or southeast below 500 meters above sea level, and the maturity is early, most of them can grow into bamboo and cannot be dug. The higher the terrain of bamboo forest, the longer it takes for winter bamboo shoots to turn into bamboo shoots. Generally, more bamboo shoots are returned, and it is difficult to grow bamboo, so it can be dug.
Second, look at the season of the formation of winter bamboo shoots: the experience of bamboo farmers is: "Nine years ago, winter bamboo shoots rotted in spring, and nine years later, winter bamboo shoots came out clearly." That is, only a few winter bamboo shoots formed before the winter solstice can be converted into bamboo shoots, which can generally be dug; Most of the winter bamboo shoots formed after the winter solstice can be transformed into bamboo shoots and unearthed into bamboo, so they should not be dug.
Third, look at the structure of bamboo forest: Generally speaking, the bamboo shoot rate of 2-3 years old underground bamboo whip is as high as 85%. Therefore,1-2-year-old and 3-4-year-old mother bamboos account for more than 30% respectively, and the bamboo stands with160-200 plants per mu have high yield of winter bamboo shoots, which can be mined in a proper amount.
Fourth, look at the shape of bamboo shoots: "The two ends are pointed, and the middle bend is rotten in spring; The top is thin and the bottom is thick, and it will become a new bamboo in the spring. " Bamboo shoots with curved bamboo shoots, pointed base or cracked and aged bamboo shoots can not be converted into bamboo shoots, but can be dug; The base is plump, the root system is developed, and the bamboo shell leaves are tender and tightly wrapped with bamboo shoots, which can be transformed into bamboo shoots and should not be dug.