Rice generally needs to mature through the maturity stage, which includes lactation, waxing, finishing, and withering stages. The following is a list of management points for each stage, hoping to help you manage scientifically to maximize the purpose of nourishing roots and leaves, live culm maturity, and full pulp grains.
1. The milk ripening stage is the early stage of rice filling, the seeds are milky-white pulp, and most of the glumes are starch and protein pulp hydrate, which is the product of photosynthesis. The rice grains are in a pulpy state, from the rice spike grouting to the endosomal thick about 10 days, large spike varieties may take about half a month, the weather is hot at this time, and the rice fields require each irrigation depth of 3-5cm, there must be enough water layer, not drought.
2. Wax ripening period Rice wax ripening period is about 7-9 days, the inner solubles of the seeds from thick to wax powder, and the seeds have a hard feeling. Rice grains gradually recede green and turn yellow. At this time, water management is required, preferably before water is not seen after water, alternating wet and dry, so that the root system is permeable to oxygen, improves root vitality, improves the photosynthetic function of the leaves, and improves the resistance of rice to collapse. But not overly dry, to prevent dryness causing injury to the rice root system and premature failure!3. The rice grain and the small branch stalks underneath the grain all turn yellow during the finishing period, the moisture of the rice grain decreases, and the accumulation of dry matter basically reaches its maximum. Rice growers who have drying conditions or can sell their rice after harvesting during this period can choose this period to harvest at the right time. If you cannot sell in time, do not have drying and drying conditions, and if the price is higher than 16 water, it is recommended to suspend harvesting to avoid mold staining at a later stage. Before the rice finishes maturing after waxing, in case of abnormal weather, it is necessary to properly irrigate the seedlings to protect them from premature failure and dead rice seedlings caused by high temperature and drought or low temperature and cold damage. The best withdrawal of water 7-10 days before harvest in saline fields, withdrawal of water early in the field, to withdrawal of water after the ground does not appear large dry crack is appropriate.
4. After the rice is fully matured, the grain turns from yellow to white, and the branch stalks and grains become dry, especially after frost, high wind, and high temperature on sunny days, the spike stalks and branch stalks are easy to break, and the rice grains may appear cracked, which affects the rice quality, and must be harvested in time during this period.
5. The best harvesting period for rice. The standard for rice to reach physiological maturity is the maximum dry matter weight in the seeds, which is the period of complete maturity. In terms of appearance, when more than 95% of each spike of grain glumes turn yellow or more than 95% of the grain spikelet axis and secondary guard glumes turn yellow, and the rice grains are set to harden and become transparent, this is the best time to harvest rice.
In some areas, the fullness of the grain is often affected by the early withdrawal of water at a later stage. Rice in the filling and fruiting period reasonable water, you can achieve the purpose of nourishing the root to protect the leaves, light culm live ripely, pulp full grain full. For this reason, generally, in about 7 to 10 days before maturity to fill the last water, the specific time can be seen in the soil moisture content and weather and grain maturity situation flexible control.
