Fertilization Â
   Lavender has a long growth period of about 210 days. In the whole growth period, although it is resistant to inferiority and drought, the nutrient is insufficient, the drought is too dry, the plant development is short, and the flower yield is reduced. Therefore, timely and appropriate amount of topdressing and irrigation. Can promote the growth and development of good plants and increase the amount of flowers. Fertilization should be carried out according to the requirements of different growth stages of the plants. In line with the principle of diligence, less application, and the combination of the three elements of nitrogen. 1 - 2 years old seedlings, should apply more phosphorus and potassium fertilizer, so that the seedlings grow robust. More than 3 years of seedlings should be applied with nitrogen fertilizer and phosphate fertilizer. It is not suitable to apply potassium fertilizer. Potassium fertilizer will increase the composition of dragon brain. Affect the quality of essential oils. Fertilizer organic fertilizer should be based, at least in the late fall or early spring organic fertilizer per acre 1000 ~ 2000kg. Nitrogen-based fertilizer, ammonium sulfate and phosphate reviving applied lime each 20 - 25kg. Fertilization must be combined with irrigation. Â
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Update trim Â
After the lavender enters the winter, the upper branches gradually wither, and must be cut and reduced to reduce nutrient consumption, so as to facilitate the growth of new shoots in the spring of next year. When trimming , cut the branches from the ground lO-15cm or more, and cut them into cones with low circumference and high middle. Generally, it is better to combine the soil in the early winter or before freezing. Earth stem base makes adventitious root formation, to expand the range of absorption of water and nutrients, to facilitate drainage, reduce the density of the field, reduce the disease damage, while protecting the seedling winter. Â
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Cutting Â
Cutting propagation is one of the main methods of lavender breeding seedlings. Cutting can maintain the inherent characteristics of the original variety, easy to operate, and the seedlings are quickly inserted in the soil temperature bed ( also known as Yangshuo, without adding hot matter, only year 2 with solar heat ) , greenhouses and fields. The survival rate of greenhouse cuttings is high, and the cutting cycle can be expanded to adjust the difficulty of labor shortage in production units. However, the equipment is complicated and the cost is high. Daejeon cuttings, management and labor, low survival rate . The soil temperature bed is simple, easy to manage and has a high survival rate. It is the main method for cutting seedlings. Field cuttings generally from May to August, the plug 25 - 3O days rooting. The survival rate of Miao Jianzhuang is not high, generally between 20% and 50% , and the lowest is about 10% . The cuttings should be selected from the upper branches with no buds, short internodes, thick branches, no disease, and semi-lignified in the same year. After the cuttings are harvested, it is better to cut them from the top to 8 to 10 cm long. Ditch cuttings, branches and soil can closely integrated, high Goushen cutting survival rate of about 7 - 8cm. By spacing the branches 4 - 5cm in the trench, and then re-soil tightly around spacing lOcm, under the careful management of the cuttings, the seedlings in mid-May to Chupu Â
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Layering Â
4. The bead breeding is to bury the branches near the ground in the late summer and early autumn. Maintain humidity and promote rooting. The plant branches are buried in the soil to produce adventitious roots, which are then separated from the parent plants to form a salary plant. because Therefore, the water nutrient supply is sufficient, the method is simple, and the survival rate is high. Generally , the strips can be pressed from June to September . When the strip is pressed, about 10 cm around the root of the plant is ditched , and the branches are bent and pressed into the pan, and the top is exposed to about 10-13 cm . Then the soil is compacted and watered. The soil and the branches are tightly combined, and then the soil is wet according to the dry and wet conditions of the soil. After rooting, the ramets are transplanted in the spring of next year.PVDF is short for Polyvinylidene Fluoride, it is a kind of Fluoride plastic with excellent physical mechanical and chemical properties, PVDF chemical stability make it no reaction with other substances, in this case it have excellent corrossion resist property and can be used for strong acid. In this case PVDF Diaphragm Valve is most suitable for chemical industrial, semi conduct industria. The working temperature could up to 140 degree. Standard fit for ANSI, JIS, DIN, pressure rate PN10 bar. Manual operate and pneumatic actuator operation both avaliable.
Ningbo RMI Plastic Co.,Ltd offer PVDF diaphragm valve with specification:
Size range:DN15~DN250 (1/2 inch ~ 10 inch)
Body materials:PVDF
Diaphragm material:PTFE,EPDM,FPM,NBR,NR
Connection: Flange ANSI CL150, JIS10K, DIN PN10; Socket: DIN, ANSI, JIS
Design pressure:0.25~1.0Mpa (PN2~10 bar)
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Ningbo RMI Plastic Co.,Ltd , https://www.rmiplast.com