Rice seedling throwing is a new technology promoted in production in recent years. It has changed the traditional backward transplanting method facing the loess, and has many advantages such as labor saving, labor saving, rapid seedling growth, multiple tillers, high yield, etc. The majority of rice farmers welcome. However, some farmers have not fully mastered this new technology and have spent time and labor. In order to help rice farmers master the technology, it is not appropriate to sum up rice throwing. 1. It is not appropriate to throw seedlings for premature rice seedlings. The seedling age is generally 30-32 days, but not more than 35 days; the seedling height is between 10-13 cm. Due to the fact that the age of pods is short and the resistance of the seedlings is relatively poor, it is not too early to ask for banishment. In the past two years, the seedlings thrown before and after May 15 are generally unable to grow in time and cause large-scale seedlings because of low temperature and strong southwest winds. On the contrary, it is not as good as the seedlings that are thrown late to grow quickly. So when is the best throwing period? I believe that in my area around May 20th is the best throwing period. At this time, the temperature is higher, and the southwesterly wind has also weakened. Need to adjust the sowing time of rice nursery. 2. The land should not be drained when the rice is too dry. Generally, the field water must be drained to avoid floating seedlings. However, after two or three days, a small amount of water should be poured to reach the state of Wang Mu Wang Shui, so that the thrown seedlings can be rooted in normal growth in time. Some farmers are afraid of flooding. They do not dare to get in the water for more than a week. The ground is exposed to large cracks, and people step on to see no footprints. As a result, a large number of dead seedlings are caused. Such lessons should be taken as a warning. 3. Should not be too dense rice throwing must have a certain density, must not be too dense. Some farmers have increased their density at random when they throw their eggs. As a result, their density is too high, and their ventilation and light transmission are not conducive to pests and diseases. At the same time, due to the excessive throwing density, the long, too thin and too thin rice can easily cause lodging after the fall. How to determine a reasonable throwing density? In general, varieties with low birth rates should be denser. Calculated by the number of holes per unit area, the general variety of 20 holes per square meter on it. Each hole (66720) 13340, equivalent to 95 inches, with 561 points of plastic floppy disk for 24 plates. However, in practical production, not every plastic hole in a plastic floppy disk can grow seedlings. There are always a certain number of holes and seedlings, which means that each acre has to throw 2-3 more disks. There are also two additional trays for far too low delivery to ensure high yields. China Agricultural Network Editor
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