Latest Technical Key Points for Summer Field Management of Rice
After rice is hulled, it becomes the rice grains we must eat every day. As the staple food of southerners, rice is a food crop that must be planted in almost the entire south. Everyone is surely very familiar with growing rice, and summer is the most critical period for rice growth. Managing rice growth well in summer is an important task for ensuring high yield and high quality of rice. So how should field management be carried out in summer? Let's take a look below!
1. Water
In summer, especially in July, the water in the field should not be too deep in the first ten days; it is enough to control the water layer at about 4cm. This not only ensures root respiration, but also discharges harmful gases that affect rice growth, making root growth more robust, extending deeper, and allowing more sufficient nutrient absorption. By the middle ten days of July, prevent excessively low temperatures from causing cold damage to rice. If the temperature reaches 15 degrees, deepen the water layer for insulation. This can reduce the probability of empty grains and white heads, appropriately increase the surface temperature, and promote nutrient absorption by rice.
2. Panicle fertilizer
After entering summer, topdressing panicle fertilizer is very important. Proper application of panicle fertilizer to rice can effectively increase the number of panicle flowers and prevent premature senescence of rice. It can also effectively improve the later seed-setting rate and increase the weight of rice grains. The specific fertilization time needs to be determined according to the growth progress of the rice. Usually, application begins when the second leaf of the seedling has grown 1/2. Panicle fertilizer can use potassium fertilizer combined with a small amount of nitrogen fertilizer. Panicle fertilizer is generally applied twice: the first time at the heading stage, and then the second spraying at full heading.
3. Weeding
Summer is not only a time when rice grows rapidly, but also a season when weeds run rampant. Weeds compete with rice for nutrients and water, and if there are too many, they will also block light in the field, causing a very large impact on the normal growth of rice. Therefore, we should inspect the rice field regularly, promptly remove weeds on the field ridges and in the field, pay attention to the use of herbicides to prevent rice from being harmed, and if weeding by hand, also be careful not to damage the rice roots. Reduce the breeding of pathogens and provide a good growth environment for rice.
4. Disease prevention
In summer, rice gradually enters the booting stage. The booting stage is the most fragile stage in the entire growth process of rice, while summer is also a season with a high incidence of various pests and diseases. The main diseases include rice blast and brown spot disease. Prevention should mainly be given priority. Control agents cannot be used alone; corresponding agent control should be carried out according to the specific disease. The main pests include the rice leaf beetle and rice planthopper. Pests will gnaw on rice leaves and affect photosynthesis in rice. To reduce nutrient accumulation in rice, agents such as abamectin can be used for control.
The above are the methods for summer management of rice. Summer management of rice is very important because it is directly related to later yield and grain weight. The main thing is still to put pest and disease control first. Pests and diseases must be controlled properly, otherwise all previous efforts will be wasted and a whole year of labor will be in vain. So I hope everyone will treat it seriously. That is all for today's introduction. If you want to learn more related information, please continue to follow us!