Management techniques of returning to Green stage of Rice

After transplanting, the leaves of rice will change from green to yellow, and when there is yellow to green, this process is called returning to green stage, which determines the number of panicles and lays the foundation for the development of spikes, which is very important. So how to manage the green period of rice? Let's take a look at the detailed introduction.

1. Water level management

It is necessary to keep shallow water after rice transplanting, so as not to damage the seedlings by high temperature and increase the survival rate. if the water layer is too deep, the new roots of the seedlings will grow, which is very easy to lose balance in the water, which is not conducive to the root system, and the phenomenon of floating seedlings will occur. In serious cases, rigid seedlings will be formed. Generally, keeping a shallow water layer of 2-3 cm after transplanting can avoid rapid evaporation of high temperature water, affect living plants, increase soil temperature and water content, increase oxygen content, promote root growth, and shorten the time of turning green.

2. Topdressing to return to green fertilizer

According to the growth of basal fertilizer and seedlings, urea can be applied for 5-7 days and 10-15 days per mu, which can promote seedling growth, accelerate its turning green, make leaves grow thick green, improve leaf photosynthesis and synthesize more nutrients. For alkaline soil, ammonium sulfate can be selected to adjust pH and promote root growth.

3. Weeding in time

It is necessary to close the weeding field before planting rice. After 5-7 days of transplanting, you can choose benzyl butadiene, ethoxysulfuron, benzoyl grass and other chemicals to mix the green fertilizer and apply it in time after adding fine sand or fine soil to mix evenly. The weeding effect is better. The residue and floating matter in the field should be removed before spreading, so as not to affect the chemical diffusion, reduce the efficacy, and retain water for about a week to improve the efficacy.

4. prevention and control of diseases and insect pests

After rice transplanting, the temperature is not high, the overcast and rainy weather is also relatively high, and the resistance of the seedlings is weak, so it is easy to be infected with diseases, so it can be combined with spraying 0.5% thiamamide granules per mu with 6-8 jin of thiamamide granules, which can prevent diseases very well. Keep shallow water for a week after application to ensure efficacy and promote seedling growth at the same time. In addition, the return to green stage of rice is the main period of damage to thrips, which can be controlled by spraying carbosulfan, chlorpyrifos or imidacloprid.

The above is the introduction of rice green management technology, hope to help you, want to know more related knowledge, please follow us.