What are the causes of rice staying green and late maturing?
Rice is the staple food of nearly half the people in the world, but did you know that the sweet and delicious rice can also encounter many problems during cultivation? One of them is staying green and late maturing. In plain terms, staying green and late maturing means that at the stage when rice should mature, the leaves are still green. So what exactly causes rice to stay green and mature late? Let's take a look below.
1. Nitrogen fertilizer
Nitrogen fertilizer is a very good chemical fertilizer for promoting crop growth and increasing crop yield during the crop growth process. But many friends worry that the rice yield will not be high, so in order to increase the rice yield, they keep applying nitrogen fertilizer, resulting in excessive nitrogen fertilizer application. Because many people think that the more nitrogen fertilizer used, the better the rice yield will be. In fact, this will backfire, because excessive nitrogen fertilizer will affect the growth and development of rice, prevent the rice from absorbing nutrients normally, and cause nutritional imbalance in the rice plant. In the later stage, when the rice should be maturing normally, it is still continuously absorbing nutrients, causing the phenomenon of staying green and late maturing, which not only fails to increase the yield but also reduces it.
2. Light
Rice is a light-loving crop, and the daily light duration must be at least eight hours or more. Because the rice's own organic nutrients all come from its own photosynthesis, and light is a necessary condition for photosynthesis. If there is not enough light duration, the photosynthesis of rice will decrease, and the nutrients and waste substances in the plant cannot be discharged in time. The rice retains too many nutrients, and the rice will keep absorbing and transforming them, leading to staying green and late maturing. Also, if the rice is planted too densely, the rice leaves will be too crowded, and the lower rice leaves will press against and shade each other, unable to receive light. Insufficient light leads to staying green and late maturing.
3. Water
Everyone also knows that rice, as the name suggests, has a very high demand for water. After transplanting, the water in the rice field must be ensured, and the water must at least reach a person's ankle. The rice field must be kept moist and supplied with water at all times, so as to ensure the normal growth of rice. If there is a lack of water, the seedlings will be unable to absorb nutrients normally. This causes the rice to mature later and the leaves to turn yellow too late. However, water should also not be too much; too much will cause the rice to rot.
4. Temperature
Rice also has strict requirements for temperature. During the growth of the seedlings, the lowest temperature they can adapt to is 10 degrees, and the best temperature for development is 30 degrees. If the temperature is lower than 12 degrees or higher than 40 degrees, the seedlings will stop growing and developing. Below 15 degrees is not conducive to the absorption of nutrients by rice, which will lead to insufficient nutrients in the rice, prevent normal growth and development, and cause the phenomenon of staying green and late maturing.
The above are several causes of rice staying green and late maturing. Rice is a crop that loves light, warmth, and water, and these three are indispensable for rice. In fact, nitrogen fertilizer is very helpful to crops, but excessive application will still have a great impact on crops. If you want to know how to prevent rice from staying green and late maturing, please continue to follow us.