1Time and method of treatment

The denuclearization of rose-fragrant was carried out in two rounds. The first time, when 70% of the inflorescences were in the 1/3 flowering stage and 1/3 in the unflowered state, the spraying effect was best. The spray concentration was : 50 mg/L gibberellic acid + 200 mg/L streptomycin; the second spraying time was performed 7-10 days after the first treatment, and the treatment concentration was 100 mg/L gibberellic acid + 200 mg/L streptomycin. The treatment effect is good, and the non-nuclear rate is above 95%.

2 Precautions for denuclearization

(1) Strictly control the processing time, the first time can not be too early, otherwise it can not reach the purpose of no nuclear, the second time use can not be too late, must be completed before the physiological fruit drop, otherwise it will cause severe grain falling phenomenon and affect the output;

(2) Dilution times cannot be arbitrarily increased or decreased, and non-nuclear reagents cannot be mixed with other pesticides or chemical reagents;

(3) Processing time is best after 4 pm, cloudy days can be handled all day.

(4) The denuclearization must be combined with the corresponding cultivation techniques in order to receive good results.

3 supporting cultivation management technology

The seedless plants must be robust, have adequate nutrition for storage, full shoots, and well-developed root systems. At the same time, they require fertile soil, convenient irrigation and drainage, and good ventilation and light transmission. Weak trees should not be treated as non-nucleated. In addition, strict control of production during production should be controlled at about 2,000 kg per acre. Otherwise, the load will be too large, resulting in insufficient tree nutrients for storage, leading to declining tree vigor and affecting the yield for the next year.

3.1 to promote the early spring budding neatly consistent

In the first treatment of denuclearization, flowering consistency is the most critical factor in the treatment of seedlessness. Therefore, 2-3 days before the wound, the use of lime nitrogen or dicyandiamide for bud treatment, in addition to the top buds do not wipe the rest of the buds wipe, both early germination, but also germinating neat, growing evenly.

3.2 Inflorescence Shaping

If the fruits have the same ripeness and the spike shape is beautiful, the inflorescence must be shaped one week before flowering. Usually, the ear tips are 8-10 cm, and the rest are all removed.

3.3 Fruit bagging management

Spray the insecticide fungicide again before bagging and wait for the liquid to dry and then bag. The half-transparent fruit bag is used. Its material is paper on one side and cellophane on one side. The cellophane is a transparent material so that the development of fruit in the bag can be observed at any time. After observing, the set of fruit bags, whether cellophane is facing the light or the backlight, no sunburn or burning phenomenon occurred in the ear. Because of its good light transmission, this kind of fruit bag is also conducive to improving the light and temperature conditions in the fruit bag and has a certain effect on early maturation.

3.4 Fertilizer Water Management

The basal fertilizer is applied after the fruit is harvested and applied at a rate of 5000-6000 kilograms per mu, and a fully cooked manure or commercial organic fertilizer may be used. In each growing season, the topdressing fertilizer was carried out 3-4 times, and the main nitrogen fertilizers were mainly from the bud to the pre-flowering stage. Nitrogen and phosphorus and potassium fertilizers were the main nitrogen fertilizers after the physiological fruit drop. The grape color transformation stage was mainly potassium fertilizer. Fertilizer can be applied at the same time as topdressing, mainly with medium and trace elements and amino acid foliar fertilizers. It is advisable to spray 3-5 times throughout the growing season. Watering in time after each fertilization, pay attention to maintain a moderate degree of soil moisture, should not flood the flood irrigation, to prevent cracking; at the same time attention to timely drainage in the rainy season.

4 Pest control

Prevention and control of pests and diseases Based on conventional pest and disease prevention calendars, special attention should be paid to the prevention and control of downy mildew in the rainy season. Spraying of protective agents and therapeutic agents should be used. In addition, attention should be paid to the prevention of gray molds during fruit ripening. The occurrence of the disease.

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