Brief introduction of pollution-free jasmine production technology

I. Garden site selection

Pollution-free jasmine, like organic jasmine, is produced in pollution-free places. Although it is not as demanding as organic jasmine, its production environment has specific requirements for soil, water, atmosphere and ecology. Therefore, the garden must be far away from urban areas, residential areas, factories and mines, and roads. It must be a place with fresh air and clean water sources.

II. Production management

The prevention and control of diseases and insect pests should focus on winter prevention, pruning and clearing the garden.

① winter prevention lunar calendar November to December, catch the temperature rise, pest activity, pest resistance is weak, spray 500 times 500 times stone sulfur mixture or 300 times 500 times orchard clear, reduce the number of overwintering diseases and insects.

② pruning before Qingming or one week after Qingming is a more suitable pruning time, and low-level regeneration is used in jasmine planting areas over 8 years old. Spring pruning, leaving stakes 15-20 cm, the first shoot length is controlled at 15-20 cm, so that the second shoot growth site is scattered, tree-shaped stretch, good light transmittance, create a high-yielding plant shape, conducive to flowering; the old and weak park can be renewed to make it "rejuvenated". The method is: with a pruning knife, cut off all the stems and branches on the plant level or more than 3cm above the ground, and then cultivate the soil properly; leave the pile 20cm to 30cm in spring in the garden under 8 years old.

At the end of pruning, the garden is cleared, and the dead branches and leaves are burned, piled or picked out of the park. Then spray 500 times 600 times of stone sulfur mixture or 300 times of 500 times of orchard clear, killing the source of overwintering insects.

③ trapping and killing pests by using black light combined with natural enemies to trap and kill pests can reduce the number of insect pests. At the same time, through the data of moths trapped and killed by black lights every day, we can grasp the high incidence period of insect pests and hatching, so as to lay a foundation for drug control.

④ drug control through black light trapping moth data, in the high incidence period of 2-3 days using plant or mineral sources, microbial pesticides, such as nicotine, tortotenone, matrine, diazepam, Bacillus thuringiensis or formalin 50 times solution or 40% pentachloronitrobenzene for root application, irrigation, can also be controlled with Trichoderma harzianum.

Fertilization management according to the growth requirements of jasmine, 60% of the fertilizer needed for jasmine plant growth in the whole year must be applied before the first ten days of April, and 40% must be used to maintain the tide of the major flowers.

After ① pruning and clearing the garden in early spring, 150kg of special fertilizer was applied per mu of ditch, and farm manure such as livestock manure, human manure and urine could also be dug and applied in ditches after composting and ripening, applying 1000kg to 1500kg per mu.

② applied 50-75 kg / mu special fertilizer twice in late June and late August as topdressing, and could also apply appropriate amount of topdressing according to the ratio of 3 ∶ 1 ∶ 1 of N, P and K about 7 days before each tide.

③ combined with fertilization, interrow stocking @ # @ 254 grain grain, covering with grass, such as green manure, compost straw, crop straw, etc., with a thickness of 5cm to 10cm. It plays a significant role in inhibiting weed growth, water conservation, fertilizer conservation, regulating temperature, cultivating soil biota, enhancing soil biological activity, increasing organic matter, improving soil environmental quality and improving soil physical and chemical properties.

Topping and truncation are also called topping, the purpose is to remove the upper part of the long branch, promote the plant to produce more new buds, increase branches, increase the number of buds and increase yield. The practice is as follows:

For jasmine plants over 3 years old, when 3-4 pairs of leaves are produced from the new branches after pruning, ① will take off the top of the new branches, and from May to September, depending on the growth of the branches, the top of the new shoots of 1 ~ 3 can be removed properly.

From May to September in ②, each bouquet of flowers can be truncated after picking buds to promote them to sprout and grow new branches earlier.

Environmental management combined with pruning, clearing garden and weeding, improving the planting of trees such as drainage and irrigation facilities, isolation zones, sunshade trees, ditch trees, and planting green manure, pigeonpea, orchid and other crops, on the one hand, play the role of edge protection, on the other hand, it can provide grass and fertilizer sources for the park, and create a biodiversity environment.

III. Picking management

The standard requirements for pollution-free jasmine buds are full and uniform, mature, white color, glossy, no inclusions, the net flower rate is more than 97%, and the content of immature green buds and disease and insect buds is less than 3%. Therefore, the picking time must be after 12:00 noon before mining, picked buds should be put in a clean bamboo basket (basket), can not be squeezed to prevent damage. The picked flowers should be spread out in a cool, clean and ventilated place in time, with a thickness of 5 to 8 centimeters.

IV. Transport

After the flowers have been picked, they should be shipped in time, and the shipping tools should be clean and odorless. Those close to the processing plant can be packed directly with bamboo baskets, and those with a long way to go should put up two bamboo ventilators in the center of each bamboo basket to facilitate heat dissipation.