Prevention and control methods of high temperature damage of soybean

The recent hot agricultural news is about the continuous rise in temperature in Huanggang City, which has a great impact on crop yield. now many areas also attach great importance to the harm of high temperature, because the weather changes as soon as it changes. the sudden hot weather may be transferred to this region, many growers are also very worried, and the relevant parts of the country are also very concerned. At the same time, it also asked the relevant experts to give a lot of prevention and control methods of high temperature. well, today, the pro-agricultural network is here to introduce several prevention and control methods of soybean high temperature hazards, hoping to be helpful to soybean growers. Of course, other planting can also be used for reference.

1. Select heat-resistant varieties

To prevent the harm of high temperature in the future, we can choose more heat-resistant varieties when planting soybeans. Now that there are so many varieties of soybeans, there is always a variety with great resistance to heat. For example, Changji soybeans, Heihe varieties, Hefeng, du Feng, Qingan and so on, the heat tolerance of these varieties is relatively OK. These varieties are new varieties developed by relevant experts according to the climate and planting conditions of the relevant areas, so we choose the varieties with strong resistance as much as possible, which can reduce the loss to a great extent.

2. Reasonable planting density

Reasonable planting density is also a small way to prevent the harm of high temperature. although the effect is not very good when the real high temperature comes, it can also have a certain effect, because if the planting is too dense, the temperature in the field is already relatively high before the high temperature, and the mortality rate has greatly increased since the high temperature, so we should rationalize the density as much as possible. That means planting should not be too sparse, and the best thing is that it can plant about 550 to 620 plants per mu on average. The spacing between rows is 50 cm, and the interval between plants is 40 cm. That's about it.

3. Timely sprinkler irrigation to adjust temperature

When the temperature is high, we can let the field temperature drop slightly by watering and irrigation. in fact, sprinkler irrigation is a very good way to prevent and control high temperature, because water plays a great role in regulating the temperature. but we can't irrigate when the temperature is highest and the sun is strongest at noon every day, it's best to sprinkle water in the field every morning. In this way, by noon, it will only evaporate the water in the field, thus reducing the damage to soybeans, followed by the need for sprinkler irrigation every afternoon to evening, so that the temperature of the land can return to the most normal time.

4. Scientific fertilization can enhance the pit property.

In order to protect the soybean through the method, then we also need to improve the soybean plant itself. now that it has been planted, it must not be prepared from the seeds. so we can enhance the resistance of soybean, that is, its own immunity by fertilizing. We can apply some nitrogen fertilizer, urea and foliar fertilizer at the flowering stage of soybean, which can provide sufficient nutrients to the plant and improve the stress resistance of the plant. Spraying foliar fertilizer can not only enhance the resistance of soybean, but also play a cooling effect to a certain extent, which can be said to kill two birds with one stone.

5. strengthen the prevention and control of diseases and insect pests

Soybean is very easy to get sick in high temperature weather, once the disease is very contagious, so it has a great impact on soybean yield, so we should pay close attention to the growth of soybean during this period and be prepared to prevent diseases and insect pests. The most common diseases in hot weather are soybean rust, virus and root rot, so we can spray with carbendazim wettable powder or EC. At the same time, it is very easy to produce whitefly at high temperature, which mainly harms the foliar surface of soybean. We can use 5% acetamiprid spray to control it.