What types of walnut varieties can be divided into?

The variety selection of    walnut is the basis for the development of walnut industry. However, in practical application, there are many classifications according to the different characteristics of walnut.

   1. Varieties are classified according to the origin of walnut: Xinjiang walnut, North China mountain walnut, Qinba mountain walnut, Xizang highland walnut.

The picture shows walnut

   2. According to the use of walnut, it is divided into edible walnut and walnut.

   1. Edible walnut is mainly for consumers to eat.

   2. Wentong walnut is a walnut with playful and collectible value after special type, characteristic selection and processing. There are different producing areas and types of walnuts, which are roughly divided into three categories: hemp walnut, catalpa walnut and iron walnut.

The biggest difference between playing walnuts and eating walnuts lies in the selection, oiling, playing, collection and trading of    walnuts.

   3. Classified according to the thickness of walnut shell: paper walnut, thin walnut, medium walnut, thick walnut.

   1, paper walnut (thickness less than 1.0mm) inner fold wall membranous or degenerated, can take the whole kernel, the kernel rate is more than 60% ~ 65%, is a walnut type with high kernel value.

   2, thin walnut (thick 1.1 to 1.5mm) inner fold wall is leathery or membranous, can take half kernel or whole kernel, kernel rate is 50.0% to 59.9%, which is the main type of fruit commercial walnut.

   3. Walnut (1.6mm to 2.0mm thick) has leathery or membranous inner pleated wall, so it is difficult to get kernel. 1% 49%. 9%.

   4, thick walnut (more than 2.1mm thick). The ossification of the inner fold wall is called "central walnut". Only broken kernels can be taken, and the kernel yield is less than 40%.

   4. Walnut can be divided into early eating walnut and late eating walnut according to fruiting early eating.

   5. According to the difficulty of taking kernel, it can be divided into cotton walnut, bisexual walnut and walnut.

   1. The type of walnut with underdeveloped internal septum and easy to take kernel.

   2. Bisexual walnut is between cotton walnut and walnut.

   3. The inner diaphragm of the walnut is highly developed, which tightly grabs the kernel, which makes it difficult to take out the kernel. All the kernels taken out are broken, so it is not convenient to eat and process them.