The determination of the sowing date is a very important part of the nursery work. It affects the growth period of the plants and their adaptability to the environment. Appropriate sowing time can increase the seed germination rate, make the seed emergence neat and tidy, the plant grows strong, strong resistance, and it is also conducive to the cultivation of high-quality products. Usually the planting period is from April to October. Seedlings of cacti (seedlings within one year) do not sleep during the winter, so as long as there is a minimum temperature guarantee in winter, sowing can be done during this period. The succulents are best sown in two batches. Summer dormancy species are carried out from September to October, and winter dormancy species are conducted from April to April. 21-27 degrees Celsius is the optimum temperature for the sowing of cacti and succulents. At this temperature, the germination rate of seeds is higher, so cacti and succulent plants are best planted in spring and autumn. At this time, the temperature difference between day and night is relatively large, the emergence is relatively neat, and the seedlings after emergence are also growing faster. When there is a temperature difference of 15 degrees Celsius between day and night, it is most beneficial for the seeds to germinate. However, when the daytime temperature is higher than 30 degrees Celsius, the growth of the seedlings is not very favorable. Therefore, the sowing time of the cactus and the succulent plants is better to avoid the summer season. Also do not sow in the rainy season, so when the bacteria are active, the seedlings after emergence are susceptible to disease. Direct potting and soaking and germination are commonly used sowing methods. Direct potting can be divided into on-demand and broadcast. When the number of seeds is large and small, the sowing method is generally adopted. That is, the seeds are slowly and uniformly sprinkled in the seedling pot (remember to disinfect the seedling pot). When the seeds are large and small, the on-demand method is generally used, that is, using fingertips, pointed chopsticks or bamboo sticks, a grain into the seedling pot (remember to sterilize the seedling pot). Immersion germination is mainly used for seeds that are difficult to emerge, such as some seeds with thick skin. If direct potting is used, the possibility of emergence is very small. The specific operation method is: put the seeds in a shallow container, slightly put some water, so as not to submerge the seeds is appropriate. Then cover the glass in a dark place. After a few days, the white cotyledons were exposed, and then they could be transplanted into a (sterilized, sterilized) seedling pot and covered with glass. Generally used to sow the basin is the best shallow and large, the material does not matter, but the basin must be flat, only this way the glass was covered strictly. Seeds and seeds can be mixed, as long as the label is inserted, pay attention to the interval.
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