Portulaca oleracea is a kind of wild vegetable that Chinese people like to eat since ancient times. It has the functions of detoxification, anti-inflammation, diuresis and pain relief. Portulaca oleracea L. potted at home is safe, hygienic and convenient to eat. Its technical points are: < P > 1. Portulaca oleracea variety selection.
purslane can be divided into two types. One is a wild species of Portulaca. Young stems and leaves are collected in fields, roadsides, Yuan Ye and vegetable gardens in spring and early summer for eating, or the whole plant can be harvested, soaked in water and dried in the sun, and used as stuffing for steamed buns and dumplings in winter. It is delicious and never tires of eating. There are three common varieties of wild purslane: broad-leaf amaranth, narrow-leaf amaranth and ornamental amaranth. Narrow-leaf amaranth is cold-resistant and drought-resistant, but its plants are short. Broad-leaf amaranth has large and thick leaves, but it is not cold-resistant and drought-resistant. Ornamental amaranth is only used for viewing, and its flowers are thin but bright. Amaranthus latifolia should be selected for vegetable cultivation. One is a cultivated species of Portulaca, which has been popularized in Taiwan Province Province since 21.
2. Pot soil preparation of Portulaca oleracea.
The flowerpot used for cultivating Portulaca oleracea should not be too small, and the clay pot with a diameter of 35 ~ 4 cm is the most suitable. Portulaca oleracea grows strongly, and its soil requirements are not strict. However, the loose, fertile sandy loam with good water retention is selected for cultivation, which accelerates the growth, makes the stems and leaves tender and has excellent quality. Portulaca oleracea likes rich water and strong light, especially the environment with dry air and wet soil. Pay attention to the place where the sun can shine, which is conducive to the growth of stems and leaves. Portulaca oleracea grows fast and tender in weak light, and it is easy to age in too strong light.
third, the planting mode of purslane.
when the temperature in each area exceeds 2℃, you can sow at any time, sow in stages and go on the market in stages.
Potted Portulaca oleracea L. is propagated by layering and sowing. Layering is to crush the longer stems and branches of the plant, and press one stem node with wet soil every three nodes. After the stem node at the pressed soil takes root, it is separated from the main body to form a new individual. Sowing should be carried out when the temperature exceeds 15℃. Before sowing, water is poured into the pot soil. After the water permeates, the seeds are mixed with fine sand and then spread, and then covered with .5cm thick sieved fine soil. Attention should be paid to heat preservation and moisture retention after sowing. Seedling can emerge 2 ~ 3 days after sowing. 7 days after the emergence of seedlings, the spacing between plants is about 3 ~ 4 cm. When the height of the seedlings is about 15cm, start to pull out the seedlings to eat, and keep the spacing between the plants at 7 ~ 8cm. Keep the soil moist during growth. Top dressing requires thin fertilizer to be applied frequently once a week, and it is best to apply granular compound fertilizer.
fourth, the harvesting method of purslane.
About 3 days after sowing or planting, the stems and leaves have fully grown. When the plant height is about 25cm and the weight of a single plant is 35 ~ 4g, the stems and leaves are thick, plump, tender and juicy, and they are harvested before budding. When harvesting potted Portulaca oleracea, we should pay attention to leaving three main stems at the base of the plant, which is convenient for continuous growth and continuous harvesting. < P > V. Portulaca oleracea propagation mode < P > Portulaca oleracea has two propagation modes: seed propagation and asexual propagation.
VI. Key points of Portulaca oleracea cultivation
The seeds of Portulaca oleracea are small, so it is better to prepare the soil carefully and drill it. 2kg decomposed manure was applied per mu, and the ploughing depth was 15cm. The clods were broken, and the border surface reached the requirements of flatness, looseness and softness, and the border was 1 meter wide and the ditch was 4cm wide. Two shallow furrows with a width of 21 ~ 24 cm were opened in the border for drilling. In order to make the sowing density uniform, fine sand 1 times the seed weight can be added to the seeds for sowing. Because seeds are easy to fall into soil pores, only the topsoil needs to be raked lightly after sowing, and there is no need to cover the soil. If the soil is dry, spray the surface of the border slightly with a watering can. When the height of the seedlings is about 15cm, the seedlings are collected for food, and the spacing between plants is kept 9-1cm, so that other seedlings can continue to grow. About 25 days after sowing, when the plant height is more than 25cm, it is officially harvested. The average seedling yield per plant is 35 ~ 4g. Pay attention to leave 2 ~ 3 main stems at the root of the plant when harvesting, and then harvest them one after another. During the growth period, topdressing should be carried out according to the growth situation. Generally, 3 times of urea solution should be applied once or twice, with 5kg urea per mu each time. There are almost no pests and diseases in purslane, so there is no problem of pesticide residue.
VII. Pest control
The main diseases that harm Portulaca oleracea are virus disease, powdery mildew and leaf spot disease. The control effect of foliar spraying with 1:1:5 sweet and sour solution on virus disease is over 8%; Powdery mildew is often controlled by thiophanate methyl and triadimefon 8 ~ 1 times; Leaf spot is controlled by chlorothalonil, carbendazim and sukeling. The main pest is aphid, which is controlled by dimethoate emulsion. (From page 11 of the book Cultivation, Development and Utilization Technology of Medicinal Wild Vegetables)