Recently, the wheat expert guidance group of the Ministry of Agriculture held a conference in Beijing to analyze the current growing situation of wheat and study the next field management measures. According to academician Yu Zhenwen, head of the Wheat Experts Group of the Ministry of Agriculture, soil moisture in the main winter wheat producing areas in China is generally better, and wheat seedling growth is a good year in recent years. However, in some regions there are also sowing and elongated seedlings. The phenomenon of polarization.
Experts analyzed that this year's winter wheat growth is generally better. The proportion of Grade 1 and 2 seedlings is large. The recent rain is good and the temperature is higher, which is beneficial to the growth of wheat. The wheat production base in the main producing areas is good, and the area of ​​sculpins, robbers, fleas, and grazing are large, the groups are suitable, and the growth is balanced. The percentage of the second and second seedlings is 80%-90%, which is basically the same as that of the previous year. A better year. Of the 11 major wheat producing provinces (regions), the seven provinces of Shandong, Hebei, Anhui, Jiangsu, Sichuan, Hubei, and Gansu provinces have generally had better seedlings than last year. Recently, the main producing areas have repeatedly rained, and the moisture content in most areas has improved significantly, especially in Henan, Shaanxi and most of Shanxi, where most of the drought has eased. In winter wheat, the relative humidity of most soils is between 60% and 90%. It is beneficial for the winter wheat to root and form strong seedlings. Since October, the temperatures in the main wheat producing areas of northwest, north, and Huanghuai have been generally high. The accumulated temperature of ≥0°C in October and November is 50-100°C higher than that of the same period of last year and the same period of last year. It can promote one more leaf of wheat, which is beneficial to late. Weak seedlings were upgraded and transformed.
However, due to the prominent phenomenon of this year's wheat robbers sowing early and raining late, the sowing date is elongated, and in some areas there is a polarization between vigorous sprouts and weak seedlings. Inadequate bottoms in individual areas, drought conditions have not been completely lifted, affecting the formation of pre-winter strong seedlings. To this end, experts suggest that we must adjust measures to local conditions, classify and guide, combat drought, protect floods, and promote weak and prosperous control to ensure safe winter wheat. We must focus on four measures: The first is to pour over winter water to keep the seedlings overwinter. All localities must seize this favorable opportunity for winter and evening to flood the wheat fields with little rainfall and lack of soil in time to promote the development of wheat packing and bark, and to ensure safe wintering. In general, the average daily temperature of 3-5 °C began pouring winter water, when the end of the night when the frozen end, watering 40 cubic meters per acre. The second is to suppress the cultivator and ensure strong growth. Groups of large, over-expanded wheat fields can be suppressed before the winter, control and strong growth. The extensively cultivated wheat fields can be repressed before they are frozen on the ground to warm them up. Pressure wheat should be carried out after noon so as to avoid frost cracking wounds in the morning. Every time after rainfall or watering, it is necessary to carry out cultivating and cultivating at the right time, break the knot, and promote root development. The third is timely removal, spring grass autumn defense. From the tillering stage of wheat to the pre-winter stage, the weeds have a small age, poor resistance to insecticides, low shading, large surface exposure, and good application effects. It is the best period for chemical control. Should be above the daily average temperature of 6 °C, sunny day when the temperature is higher than 10 °C when the removal, pay attention to the amount of medication to prevent injury. The fourth is to reduce moisture and prevent waterlogging. Southern rice has a lot of rain in the buckwheat area, which can easily cause waterlogging. The wheat fields that have not yet been ditched must be opened in time, cleared in the trenches, and dredged and drained. In particular, the rice paddy fields should be opened in time, and the density of open trenches should be appropriately increased.
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