The ears of rice are full. Should they be aired? What are the benefits of hanging fields?

After a certain number of rice tillers are reached, artificial intervention is carried out in dry land to make all the normal tillering rice lateral seedlings mature, which is regarded as effective tillering. If tillers are free in one term, not only will tillers be immature in the later period, but too many tillers will affect the quality of the whole rice because of competition for nutrition.

When is the right time to dry the fields? My personal opinion is that my family grows rice in Baoquanling, the third accumulated temperature zone in Jiamusi. In my opinion, the termination period of effective tillers is around the end of June, and tillers that cannot mature or can only grow into spikelets in July can stop growing without water and fertilizer supply, reduce nutrient consumption, make the main stem and early tillering seedlings get more nutrients, and lay a good foundation for high yield of strong stems and big spikes. Personally, I think.

The occurrence and spread of many rice diseases and insect pests are directly related to the temperature and humidity between rice seedlings and plants, such as rice blast. When the relative humidity of rice field is above 90%, it is easy to cause the reproduction and invasion of bacteria. Bacterial blight is serious in fields with air relative humidity above 70%, such as rice leaf miner and Chilo suppressalis. They all need a high humidity environment to hatch their eggs. In a word, rice can obviously improve the lodging resistance of plants and effectively coordinate the rice drying in the field.

Weather conditions have a direct impact on rice drying. For example, when the weather is hot and the temperature is high, the drying time should not be too long, because the water evaporation is too large, which is not conducive to the later growth of rice. If it is cloudy, the drying time can be extended appropriately. If it is rainy all the time, it is necessary to drain the water before drying, which is also the beginning of the weather. How can I do it?

If the rice in your own field grows well and the leaves are vigorous and dark green, you can sun it early and then sun it. On the contrary, if the growth of rice is weak and the leaves are light in color, you can choose to sun lightly or not. If it rains, the plot is flat and the drainage condition is good, you can bask in it lightly. If the terrain is rugged and the accumulated water cannot be discharged, even if it rains heavily, other people's water can be poured back to their own plots, and they can be sun-dried again to extend the sun-drying time.

The specific time should be determined according to the total number of seedlings, so that the seedlings can be dried in the field. When the total number of rice tillers in the whole field reaches the planned number of plants, and when the total number of rice tillers reaches about 85% of the planned number, the field can be dried immediately. Due to excessive application of nitrogen fertilizer, the whole plant should be aired early and then aired. On the contrary, the soil is thin, the fertilizer and water conservation are poor, and the rice seedlings are weak.