The temperature changes too much in June. How to manage rice?

1, the water layer is always shallow and artificially heated.

Don't go to the deep water in the field when fertilizing or weeding. The weeding effect in deep water is not good, and tillering is also inhibited. The water layer should be kept 3-5 cm, but it should not be without water. In order to promote tillering, water temperature is more important than air temperature. In low temperature weather, the promotion of water temperature on tillering is more obvious. The sun shines during the day, and water can store heat. The seedlings heated by water are not easy to cool down, and the heat is not delayed all night. Some people say, what if the land is uneven? There is really nothing to do. Water ridges can be built, or irrigation can be done in the racecourse in the early stage to ensure that Gaogang is underwater and there is no water in the low-lying areas. Later, when the rice grows taller, slowly irrigate it with shallow water. In the field, it is necessary to lay a water pit and limit the height to ensure that more water can be discharged in time after the rainstorm. Don't pour well water too slowly! It will make the sprinkler grow too slowly to ensure rapid irrigation!

2. Fertilization should be reasonable

Not tillering is not lack of fertilizer, but other conditions. In June this year, there was a rainy day with a large temperature difference, with more low temperature and less sunshine. Please don't apply big head fertilizer and little fertilizer many times to ensure that the number of weeds is about 60%-70% of the number of ears harvested on June 13, and the last fertilization amount on June 16 depends on the number of weeds in the previous period! (The total amount of fertilizer applied in the whole year is 35% pure nitrogen) Ensure that the total number of weeds is about 105% of the number of harvested ears on June 25th, so that the number of weeds controlled after 25 days corresponds to the number of harvested ears! Prevent bacterial brown spot disease in the late stage of fertilization. After June 20, if the tillers in the field are insufficient and some fields are too yellow, chemical fertilizers and regulated fertilizers (65,438+00% pure nitrogen for the whole year) should be applied to control human evils and change the growth of rice around June 30. Of course, some microbial agents can also be mixed into the evil fertilizer to promote the growth of evil, such as microbial agents in Mumei soil.

If it continues to be rainy and cold, there will be insufficient tillering in the field in the early stage. Don't worry, normal effective tillering can be divided into the end of June and the beginning of July. If tillers are still insufficient by then, they can be used for large panicles. What we need to do now is to fix the fertilizer and the water pipe. Weather often gives us opportunities, depending on whether you can seize them.