The middle and late management of wheat must be followed up

According to the agricultural situation regulation of the Ministry of Agriculture at the end of March, the proportion of first-and second-class winter wheat seedlings nationwide reached 86 percent, an increase of 2.3 percentage points over the previous winter, 3.1 percentage points higher than the same period last year, and an average increase of 2 percentage points over the same period in the past five years.

The area of wheat across the country has increased steadily this year, and the current growth of seedlings is obviously better than that of last year, and it is also a better year in recent years, and it is hopeful to win a bumper harvest of summer grain this year.

The existing problems: compared with previous years, the sowing amount of wheat this year is on the high side, and some wheat field populations are too large, increasing the risk of lodging, diseases and insect pests and "late spring cold" harm. Especially with the rise of temperature, the occurrence area of wheat stripe rust, sheath blight, powdery mildew, aphids, red spiders and other diseases and insect pests is large, the speed of expansion is fast, and the situation of prevention and control is quite severe. At the same time, according to the prediction of the China Meteorological Administration, in April, the temperature in most of the northern winter wheat areas is close to the normal year or on the high side, the precipitation in most parts of central and southern North China and Huang-Huai is less than that in the same period of the normal year, and the drought in some areas with poor irrigation conditions may continue or develop, which is not conducive to the growth and development and yield formation of winter wheat. From now to harvest, wheat production still has to experience the threat of "hot and dry wind", "rotten field rain", lodging, diseases and insect pests, and the task of resisting disasters and winning a bumper harvest is still arduous.

At present, most of the winter wheat in the country has entered the jointing stage, which is not only the key period to determine the large spike and small spike, but also an important stage to strengthen the field management and lay a solid yield foundation. The Ministry of Agriculture requires that the following measures be taken:

First, it is necessary to strengthen fertilizer and water management. According to the different growth trend, growth process and soil moisture of wheat, classified management and the combination of promotion and control, for the prosperous and long wheat fields with large population, fertilizer and water move backward, control and promote strong; for the weak wheat fields, fertilizer and water attack early and promote the weak to become strong; for the fields with normal seedling condition, apply jointing fertilizer, irrigate flowering grouting water and spike grain fertilizer, effectively promote the increase of spike number, grain number per spike and 1000-grain weight, and improve the per unit yield of wheat.

Second, we should strengthen the prevention and control of diseases and insect pests. Implement the territorial responsibility for prevention and control, strengthen the monitoring and early warning of diseases and insect pests, focus on preventing stripe rust, preventing scab, controlling the occurrence and harm of aphids, red spiders and trematodes, vigorously promote professional unified control, and carry out emergency prevention and control in a timely manner. minimize the damage caused by diseases and insect pests.

Third, we should do a good job in disaster prevention and reduction. Pay close attention to weather changes, improve emergency plans for natural disasters such as "late spring cold" and "dry and hot wind", and prepare materials and techniques in advance, especially in view of the large population in some wheat fields this year. Timely take "one spray and four prevention" measures (that is, spraying fertilizer mixture to prevent diseases and insect pests, lodging, premature senility, dry and hot wind) to enhance wheat lodging resistance and prevent wheat premature senility. Reduce the harm of diseases and insects and "dry and hot wind".

Fourth, we should strengthen the guidance service. Continue to organize experts and technical personnel to go deep into the fields, check seedlings, soil moisture, diseases and insect pests, improve technical plans, strengthen guidance and services, and help farmers do a good job in field management in accordance with local conditions.