Jujube summer cutting method

The traditional jujube garden management is more extensive, generally not summer cut, resulting in tree-shaped disorder, the backbone of the branch angle is small, although the tree is tall, poor ventilation and light transmission, low yield. Jujube summer cut not only favorable ventilation and light, but also can adjust the tree nutrition, improve the fruit setting rate, improve the quality of fresh dates.

When summer shear jujube summer cut should be carried out when the jujube head grows slowly, generally in mid-June. Premature secondary shoots and jujube stocks tend to germinate new branches and affect fruit setting. Too late, overgrowth of nutrients will consume tree nutrients. The South is not conducive to the outcome of the second.

How to summer cut jujube summer shear should be based on thinning, and the combination of thinning and cutting. Jujube tree pruning should master the following principles: "Extension of backbone branches, short weaknesses, weak branches, cultivation of robust branches, use of long branches".

Thinning and sparse removal of bad branches and densely squeezed shoots and leggy branches. A new jujube head may be left every 50 centimeters to cultivate the result branches, which is conducive to secondary fruiting.

The long shoots will be updated, retracted, and the new shoots sprouted under the short cuts of the branches will be picked and left. The long and strong new jujube heads will be placed in long positions and will not be pruned so that the main branch can be extended to the branches and lateral branches to expand the crown. , add more results to the site.

Wiping buds sprouted on the main trunk and shoots sprouted.

Topping the heart is to cut away the buds on the top of the jujube head to control its growth, promote secondary branches, and increase the number of jujube stocks. The degree of picking can be determined according to the orientation of the branches. A large space can leave 5~6 secondary branches, a small space can leave 3~4 secondary branches, to increase the results of branches, the results of the year, and even create secondary fruit conditions.

If the use of leggy branches has a biased crown tree, lack of branches or space for growth, the long branch of the internal bandits can be pulled out to fill the space and enlarge the result area.

Goji Polysaccharides is a rare plant polysaccharides containing protein, which have side chains of polysaccharide composed by six carbon sugars (rhamnose, arabinose, xylose, mannose, galactose, glucose) and main chains of protein composed by 18 kinds of amino acids. The glycoproteins with biological activity is a high-strength immune enhancer.

Wolfberry products with stable quality are all natural, safe, sanitary and fast absorption.Lycium barbarum polysaccharide extraction and purification is divided into two steps. First, the extraction of Chinese wolfberry crude polysaccharides, the second is purified Lycium barbarum polysaccharide. Crude polysaccharides extraction process is as follows: Weigh dried crushed medlar, petroleum ether: acetone (1: 1) reflux degreasing, the solvent was filtered off, the residue was air-dried 80% ethanol off monosaccharide and oligosaccharides. 
The polysaccharide is extracted by water after dissolving the residues such as oligosaccharides in water at 90-100 DEG C, the extract is concentrated under reduced pressure, the polysaccharides are precipitated by ethanol, the precipitates are washed with anhydrous ethanol and acetone, and the lycium polysaccharides are dried under vacuum. The crude polysaccharide is purified by passing the Lycium barbarum polysaccharide through a column of DEAE cellulose with different concentrations of NaCl as an eluent, concentrating the eluates with different salt concentrations respectively under reduced pressure, desalting them by dialysis, and then lyophilizing them differently Grape Lycium glycoprotein.

Modern medical research suggests that wolfberry polysaccharides can improve human immunity and have functions as anti-cancer, cancer treatment, hematopoiesis, liver protection and hypotensive, free radicals removal , anti-fatigue, anti-radiation, and cell activity improvement; Goji polysaccharides can control cells division& differentiation, and regulate cell growth & aging, which is widely used in the pharmaceutical, health food and other fields.

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