1 Hawthorn potted preparation

1.1 seedling selection

Potted soft seed hawthorn is the key to selecting one-year healthy seedlings. It is the key to improving the survival rate and cultivating the tree shape by selecting seedlings with rich roots with developed roots, more roots and better absorption.

1.2 container selection

The containers that can be used for potted soft-seed haw are mainly clay pots and plastic pots. The mud basin is permeable to water and has good permeability. However, the basin is heavy and fragile. The plastic basin is lighter, with faster temperature increase, lower cost and lighter material, but poor gas permeability. Due to the rapid growth season, it is beneficial to promote root growth and promote tree development. Both of the above pots have their own advantages and disadvantages. Plastic basins are preferred. The diameter of the basin should be no less than 50cm, and the height of the basin should be 30cm.

1.3 Matrix selection

Soft-seed sorghum is suitable for neutral soil, and it is loose and ventilated, and the soil with high organic matter content is well drained. The substrate is prepared in the ratio of 10:3 to 4 with peat soil or mountain soil and decomposed farmyard manure. The tested pH value is preferably 6.5 to 7.0.

2 Hawthorn potted main techniques and requirements

2.1 colonization

Under the condition of configured nutrient pots, the colonization time is generally suitable in spring. Spring planting avoids the unfavorable factors of winter planting in winter. The root system was carefully treated during planting. The rootstock of the soft-seed hawthorn was red in the mountain, and the main root was not obvious. It was mainly to promote the vigorous growth of the roots, and the excessive roots should be properly removed.

2.2 Ding and shaping

Potted soft seed hawthorn, the fixed height does not exceed 15 ~ 20cm. Conducive to the cultivation of spherical tree shape. In the second year, the main branches were removed, and the branches and thin branches were mainly used to promote the rapid growth of the trees.

2.3 Fertilization and irrigation management

Soft-soiled hawthorn is fertile and drought-tolerant. In the basin with good permeability, the soil moisture content is not less than 30%. In the early spring from March to April, 20 to 30 g of fruit tree special fertilizer (complex fertilizer) is applied per pot. When entering the autumn (August to September), apply 20 to 30 g of special fertilizer for fruit trees once.

2.4 Pest Control

Soft seed hawthorn has strong resistance to pests and diseases. In sporadic potted plants, there is no need to use any pesticides or fungicides. For example, if you concentrate on a potted plant or a tree with other pest vectors nearby, you need to control the heartworm. The prevention and treatment time was sprayed with 800 times of deltamethrin in the 7 to 10 days before flowering, and the whole tree was sprayed. It can be sprayed once every 7 to 10 days after flowering. Soft-seed hawthorn has strong anti-fungal disease ability and does not need to control other leaf diseases.

2.5 winter protection

The wintering protection of potted soft-seed hawthorn is mainly to prevent the dryness of the potting soil. The variety is resistant to -45 ° C low temperature, no additional insulation treatment.

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I. Poly Aluminium Chloride Properties

1. Its dosage lower than aluminum sulfate (based on Al2O3) and water treatment cost is lower than other inorganic flocculants.
2. The product can cause quick formation of flocs, big flocs formation and rapid precipitation. Its treatment capacity is 1.3-3.0 times of other inorganic flocculants.
3. It enjoys wide-range adaptability for different-temperature source water and a good solubility.
4. It is slightly corrosive and easy for operation.
5. The liquid product is suitable for automatic dosing. Furthermore, it will not block pipes over long-time usage.

II. Description

III. Poly Aluminium Chloride Application:

1. Its purifying effect on low-temperature, low-turbidity and heavily organic-polluted raw water is much better than other organic flocculant, furthermore, the treatment cost is lowered by 20%-80%.

2. It can lead to quick formation of flocculant (especially at low temperature) with big size and rapid precipitation service life of cellular filter of sedimentation basin.

3. It can adapt to a wide range of pH value (5−9), and can reduce the pH value and basicity after processing.

4. The dosage is smaller than that of other flocculants. It has wide adaptability to the waters at different temperatures and at different regions.

5. Higher basicity, lower corrosive, easy for operation, and long-term use of non-occlusion.

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