Management techniques of Jasmine Field in Summer and Autumn

Jasmine is a traditional fragrant flower. Riley is cultivated in the open field in many places, and the flowering period is as long as 5 Mel for 7 months. The main techniques of Jasmine Field Management are as follows:

Ploughing and weeding. We should often shallow hoe and loosen the soil and weed, create a loose and aerated soil environment for Riley's root system, avoid the dispersion of nutrients and promote its growth and development.

Second, reasonable water management. Riley flowers bloom luxuriantly, the water transpiration is large, the soil should always be kept moist, the field water content during flowering period should be kept at 60% Mel 80%, in summer in the morning and evening, in autumn in the morning, and in winter, watering at noon every 4-5 days. In the early hot weather, a sprayer can be used to moisturize its leaves, which is conducive to luxuriant growth.

Third, apply fertilizer scientifically. When the new shoots of jasmine sprouted, 1500 kg of rarefied human feces and urine with a concentration of 50% were applied once per mu. Add 4 kg of urea. After pruning in summer, combined with ploughing and weeding, 500-1000 kg of farm fertilizer, 15-20 kg of urea, 35-50 kg of superphosphate and 25 kg of compound fertilizer were applied per mu.

During the bud period, 50 grams of potassium dihydrogen phosphate and 150 grams of urea were used to spray fertilizer on the leaves. At the end of autumn blossom, it is generally possible to apply fertilizer once every 15 days. After White Dew, the flowering period is almost over and fertilization can be stopped. In the usual fertilization to open ditches deep application, should not be spread, if appropriate to apply a small amount of bone powder, can make the fragrance thicken.

Fourth, pruning and topping. After transplanting, Riley seedlings should be pruned and thinned to cultivate high-yield trees. The pruning work must be finished before the jasmine germinates. For the old jasmine plant which has been growing for more than 6 years, the first bud will appear from the Beginning of Summer to Lesser Fullness of Grain. This time, the number of pregnant buds is small, the flower is small, and the quality is poor.

In order to prevent the wasting of nutrients and promote more shoots, the buds and terminal buds of branches should be cut off, which is the key measure to ensure that jasmine blossoms well. After entering the flower picking period, each inflorescence needs to be cut short after picking. After each flower harvest in June, July and August, two pairs of leaves were left for pruning.

Fifth, disease and pest control. The main diseases of jasmine are white silk disease and withered branch disease caused by fungi. It is found that the diseased plants should be treated, pulled out the diseased plants or sprinkled with pentachloronitrobenzene. Or use 40% sclerotia net or 25% Shibaoke, or 40% pentachloronitrate and other 500-800 times solution to irrigate roots or spray poor control.

The main pests are shell insects, red spiders and thrips (Riley flower borer), which can be sprayed with 1500-2000 times of dimethoate emulsion. Spray again after 7-10 days. The spraying time should be carried out after picking flowers in the afternoon. In addition, when pests occur, they can smoke in the garden at dusk, which can drive away adults to lay eggs.