Determining the Method of Suitable Rice Throwing Period
2018-04-23 16:00:22
Different rice areas vary greatly in terms of climatic conditions and cultivars. If the production conditions permit, in the appropriate temperature range, it is better to throw the earthworms sooner rather than later. Early throwing can make full use of the growing season, extend the field nutrition period, and increase effective tillering and nutrient accumulation. Early rice should be sown early as early as possible, so that as early as early as the high yield for the double late to win time; late rice should fight for the season, seize the opportunity to sowing early, because the earliest late rice throwing period, the earliest earliest stage, the higher the yield.
Ageing is an important factor in determining the throwing period. It is necessary to achieve the three-time coordination of the sowing period, the dumping period, and the age of grazing. Compared with conventional hand-planted hoe, plastic tray sowing date is slightly later, sowing volume is larger, pod hole is small, nutrient group is small, and the pod age is not appropriate. According to their own fertility characteristics, the suitable age for transplanting bamboo shoots is 2.5–3, and the age for transplanting plastic tray seedlings is 3–5. Paper tube should pay attention to avoid over ageing. It is easy to see long seedlings or dead seedlings in paper cylinders, and it is difficult to divide the seedlings after they are rotted. The effect of rooting is also poor, and it is difficult for the roots to bunch at the bottom.
The determination of the throwing period also takes into account the temperature. In general, temperature is the key to determining the throwing period of early rice. When the local average temperature is stable at 15°C, it is the earliest temperature limit. Rice seedling roots can grow normally only when the water temperature reaches 15°C. Therefore, the water temperature of 16°C (indica rice) to 18°C ​​(indica rice) can also be used as the temperature standard for throwing seedlings. Since the roots of the transplanted roots are shallow, some of the seedlings are lying in a lying state after being planted. Only when the temperature is high, new roots, seedlings, and growth can be quickly developed.
When determining the appropriate time for throwing lice, we should also consider: Yeing Ning should not be long; late-maturing cultivars should be sowed early, early-maturing cultivars should be sowed late and late; cultivars with large sowing amount should be thrown first; small-seeding can be thrown later; paclobutrazol The comparable unprocessed throws are processed later. The general early rice in southern Guangdong can be dumped at the end of March and early April, and late rice is in late July and early August. Early rice in the northern region on April 15-20, late rice thrown around July 25.
Ageing is an important factor in determining the throwing period. It is necessary to achieve the three-time coordination of the sowing period, the dumping period, and the age of grazing. Compared with conventional hand-planted hoe, plastic tray sowing date is slightly later, sowing volume is larger, pod hole is small, nutrient group is small, and the pod age is not appropriate. According to their own fertility characteristics, the suitable age for transplanting bamboo shoots is 2.5–3, and the age for transplanting plastic tray seedlings is 3–5. Paper tube should pay attention to avoid over ageing. It is easy to see long seedlings or dead seedlings in paper cylinders, and it is difficult to divide the seedlings after they are rotted. The effect of rooting is also poor, and it is difficult for the roots to bunch at the bottom.
The determination of the throwing period also takes into account the temperature. In general, temperature is the key to determining the throwing period of early rice. When the local average temperature is stable at 15°C, it is the earliest temperature limit. Rice seedling roots can grow normally only when the water temperature reaches 15°C. Therefore, the water temperature of 16°C (indica rice) to 18°C ​​(indica rice) can also be used as the temperature standard for throwing seedlings. Since the roots of the transplanted roots are shallow, some of the seedlings are lying in a lying state after being planted. Only when the temperature is high, new roots, seedlings, and growth can be quickly developed.
When determining the appropriate time for throwing lice, we should also consider: Yeing Ning should not be long; late-maturing cultivars should be sowed early, early-maturing cultivars should be sowed late and late; cultivars with large sowing amount should be thrown first; small-seeding can be thrown later; paclobutrazol The comparable unprocessed throws are processed later. The general early rice in southern Guangdong can be dumped at the end of March and early April, and late rice is in late July and early August. Early rice in the northern region on April 15-20, late rice thrown around July 25.