How much is a jin of orange seeds, how many seeds are in it, and when is the best time to sow?
What is commonly known as the orange includes various kinds of oranges, and is one of the more widely distributed and more northern species in the Citrus genus. Oranges contain various nutrients beneficial to the human body, such as hesperidin, citric acid, pectin and vitamin C. They are sweet in taste and neutral in nature, and have the effects of promoting salivation and quenching thirst, soothing the liver and regulating qi, and promoting lactation. Therefore, the orange is a relatively popular fruit, and growing oranges is very promising. So, how much is a jin of orange seeds? How many seeds are in one jin? When is the best time to sow?
At present, orange seeds are being hyped very high, generally more than 500 yuan per jin, but as varieties such as Wogan gradually become saturated, it is believed that in 2018 orange seeds will return to a rational price!
There are roughly more than 2,000 orange seeds per jin. Because the seeds are polyembryonic, they may send out 2 or more young shoots, so each jin of seeds may grow more seedlings than the number of seeds. Of course, this is only theoretically possible, and in actual operation it is constrained by various conditions. Generally, with overwintering sowing, each jin can produce about 2,000 seedlings; with spring sowing, each jin can produce 2,500 seedlings. This is because overwintering sowing may encounter low-temperature chilling injury, affecting the emergence rate and seedling survival rate. If overwintering sowing uses greenhouse facilities for seedling raising, or small arched sheds for covering and seedling raising, the sowing quality can be improved and the emergence rate increased. The soil quality of the seedling bed and the level of management have a relatively large impact on the emergence rate. Many seedling growers suffer serious losses because of seedbed and management problems, and the emergence rate may be less than 50%, or even lower.
Therefore, orange seeds should be sown at the right time. When is the best time to sow?
The orange is a subtropical fruit tree and is not tolerant of severe cold, but it does have a certain degree of cold resistance. It can be sown in spring, autumn and winter. Among these, sowing in March in spring is best, and it can also be sown in October in autumn. In winter, some grass should be covered over the seedlings to protect them from freezing. However, if sowing in summer, caution is needed, as summer temperatures are relatively high and sunlight is intense, which can easily cause high-temperature damage and affect the normal growth of the seedlings.
Before sowing, the seeds should be soaked in a medicinal solution for disinfection. At the same time, soaking the seeds for 2 hours can increase the germination rate and reduce seed loss. In areas where the average winter temperature is not low and the frost-free period is relatively long, fresh-seed sowing can be adopted. The fresh seeds can be sown after the surface moisture is dried in the sun. Fresh-seed sowing in autumn can extend the growth time and allow earlier grafting. For sowing density, sow 100-150 jin per mu.
Many farmers do not pay much attention to sparse and even sowing. They grab a handful and scatter it randomly, causing the seeds to be unevenly dense, which both affects seedling quality and causes seed waste. In order to sow evenly, sowing should be carried out by dividing into beds and weighing. For example, if a plot has 10 seedling beds, before sowing the seeds can be divided into 10 equal portions, with one portion broadcast per bed, and one portion can also be further divided into 2 equal parts and broadcast back and forth twice in the same seedling bed, making it easy to achieve even broadcasting.