The latest Technical and method course of returning Rice Straw to Field and points for attention

In rice cultivation, there is a technology of returning rice straw to the field, which contains a variety of nutrients and organic matter for the growth and development of rice. After returning it to the field, it can increase the organic and inorganic nutrients in the soil and improve the soil structure, which is beneficial to the high yield of rice. So how to return the rice field to the field? What should I pay attention to? Let's take a look at the detailed introduction.

1. Harvest stubble

Harvest immediately when the early rice is mature, the length of stubble depends on the height of the plant, the height of the plant is longer, the stubble is short, usually about 80 cm, cut off from the neck, plough immediately after harvest, press the rice stubble into the soil, and then flatten the stem. After that, keep the soil layer of about 5 cm to make it rotten naturally. After planting for 7-10 days, drain the water and smooth it until there is no shoe print in the rice field, and then irrigate 7 cm of water to promote the tillering and rooting of rice, so that the nutrients of rice stubble are absorbed by rice.

2. Weeding and fertilization

Weeding should be carried out before planting, lest weeds begin to grow after absorbing sufficient nutrients, which is easy to cause grass famine and is disadvantageous to the growth of rice seedlings. Generally, 0.75-1 kg of butachlor powder per mu is applied to 15-20 kg of soil, which can keep the field free of weeds. Before planting, 20 kilograms of ammonium carbonate or 5 kilograms of urea, 7.5 kilograms of potassium chloride and 15 kilograms of calcium superphosphate are generally driven per mu. There is no need to apply fertilizer in the seedling growth period, and urea solution can be sprayed in heading.

3. prevention and control of diseases and insect pests

After rice planting, we should pay attention to the prevention and control of diseases and insect pests, because rice will decompose nutrients in the process of maturity, rice is very easy to absorb insect pests in the later stage, so we should pay attention to special prevention and control. In addition, in the process of straw ripening, there may be a large number of bacteria, which will infect the plant and cause it to be infected with diseases, so we should also pay attention to it.

4. Points for attention

When returning rice straw to the field, we should first pay attention to the amount of straw. Generally, 40-50% of the total amount of fresh grass in Honda is suitable. If it is used too much, it may lead to seedling poisoning. In addition, it is not appropriate to transplant rice seedlings too early, and then rake and transplant rice seedlings after straw rot and fermentation. in order to speed up the ripening speed of rice straw, lime can be applied, and transplanting seedlings should not be carried out before the straw is completely rotten, otherwise it will cause seedling poisoning and death. In the straw rot fermentation, the water in the field should be kept in and out, so as not to lead to nutrient loss, and nitrogen fertilizer should be applied in time after transplanting, so as not to increase the nitrogen element of microorganisms and seedlings, resulting in poor seedling growth.

The above is the introduction of straw returning technology and matters needing attention. I hope I can help you. If you want to know more about it, please follow us.