It can also be propagated by cutting with its stem or branch.
In the continuous cropping field, when Portulaca oleracea blooms and bears fruit in June, some plants can be left to not be collected and put on the market, so that they can blossom and seed, and the scattered seeds will grow in the next year without seed collection and sowing.
The pot used for cultivating Portulaca oleracea should not be too small, and the mud pot with the diameter of 35-40cm is the most suitable. Portulaca has strong growth, not very strict soil requirements, but the use of loose, fertile, good water conservation sandy loam cultivation, growth speed, young stems and leaves, excellent quality. Portulaca likes water and fertilizer, strong light, especially in dry air and humid soil. It should be placed where the sun can shine, which is conducive to the growth of stems and leaves. Under weak light, Portulaca grows fast and tender. Under strong light, it is easy to age.
In China, Portulaca is mainly used to collect the stems and leaves of wild species in the field in spring and summer. In some developed countries, it has gradually turned to artificial cultivation. Taiwan Province of China is vigorously promoting artificial cultivation.
In the cultivation season, in the southern part of Taiwan, Guangdong, Hainan and other areas of subtropical region, sowing begins in late February, and harvesting begins in succession until November; in the spring of Jiangsu and Zhejiang region, sowing begins in the middle and late May, if planting with protected land, sowing can be carried out in April, and the peak growth period is from June to August; in the open cultivation of North China, sowing begins in the first and middle June.
When the temperature of each region exceeds 20 ℃, it can be sown at any time, by stages, and listed by stages.
Purslane can be planted from spring to autumn. Spring sowing starts late and the quality is tender. Sowing in summer and autumn is easy to blossom and the quality is coarse and old. Generally, it can be sown between February and August. If it is cultivated in a protected field (plastic greenhouse, plastic film, greenhouse), there is no strict sowing time.
Because the seeds are easy to fall into the soil pores, after sowing, it is only necessary to rake the surface soil lightly, and no need to cover the soil again. If the soil is dry, use a watering can to spray slightly on the border surface. When the height of the seedlings is about 15cm, the seedlings should be collected and fed to keep the plant spacing of 9-10cm, so that other seedlings can continue to grow.
During the growth period, topdressing is carried out according to the growth conditions. Generally, 300 times urea solution is applied for 1-2 times. Portulaca has almost no diseases and insect pests, and there is no pesticide residual problem.
It likes warm, dry and sunny environment, half shade resistant, good growth under scattered light, drought resistant and sandy loam with good drainage. It is not cold resistant and the temperature in winter is not less than 10 ℃.
It is mainly caused by snails. It can be controlled by spraying fresh lime in the morning. The main diseases of Portulaca oleracea are virus, powdery mildew and leaf spot. The control effect of spraying 1:1:50 sugar vinegar solution on the leaves of virus diseases is over 80%; the control of powdery mildew is usually 800 ~ 1000 times of tolbutine methyl and Triadimefon; the control of leaf spot diseases is usually chlorothalonil, carbendazim and sukelin.
