After the ambush, it is hot for people to prevent summer heat and rice to prevent heat and cool down.

High temperature heat injury is one of the common diseases of rice. High temperature heat damage of rice occurs in some areas every year, and causes serious economic losses. For example, in 2006, high temperature damage to rice occurred in many areas of Anhui Province, resulting in 2 million mu of rice affected.

Effect of High temperature Heat damage on Rice

It was ambushed yesterday, which means that it will enter a continuous hot weather in the next 40 days or so. This is very disadvantageous to the growth of rice. Although rice prefers the growth environment with sufficient light and high temperature, it is also very disadvantageous to the growth of rice because of the high concealed temperature. In particular, the impact will be more serious if the rice is in the budding and heading stage.

Rice during this period is very sensitive to temperature. That is, the period of about ten days before heading of rice. During this period, the most suitable temperature for rice growth is between 25 and 30 degrees. Exceeding this temperature will cause rice floral organ dysplasia and affect pollen maturation. The direct consequence of this is a serious decline in rice yield. And because farmers tend to ignore the impact of high temperature on rice, which further leads to the aggravation of the impact of high temperature on rice.

Prevention of High temperature Heat injury of Rice

The first step in the prevention of high temperature heat injury in rice should be the selection of suitable rice varieties.

The selection of rice species must be made according to the local conditions. In the areas where rice heat damage occurs more easily in summer, rice varieties with better resistance to heat damage should be selected, and mid-mature and medium-mature rice are more suitable. In this way, high temperature weather can be staggered in the high temperature sensitive period of rice, and the probability of disaster can be reduced. Generally choose Hongliangyou 166 and 5 is the more suitable varieties, especially and Anhui, Hubei and other areas.

Secondly, farmers should also make reasonable arrangements for the planting time of rice, and try to stagger the heading date of rice with high temperature weather.

Third, it can reduce the temperature of the rice field reasonably and keep the water layer of the rice field at about 5 cm in the high temperature sensitive period, which can play an appropriate cooling role. In particular, some relatively arid plots must pay attention to drought prevention and cooling work. If the land with better conditions can consider the way of daily irrigation and night drainage, it is more conducive to the cooling of paddy fields.

Fourth, fertilization to enhance the high temperature resistance of rice is also a good way, base fertilizer and topdressing can not be less, all kinds of fertilizers are used evenly to avoid element deficiency and improve the high temperature resistance of rice. In addition, it is best to spray foliar fertilizer reasonably in the early stage of high temperature. It can be chosen to spray 50ml Kangduole solution on rice leaves per mu of paddy field to reduce high temperature heat damage. In addition, 3% superphosphate solution or 0.2% potassium dihydrogen phosphate solution can be used in combination to enhance the stress resistance of rice and avoid the reduction of rice yield.

The above comes from promoting agriculture through science.