We have focused on the promotion of "one morning and two nights" technologies in wheat and corn production, namely, early corn sowing, timely harvesting, and timely timely wheat sowing techniques. Delaying the harvesting period of corn and adopting late harvesting technology can increase corn production by extending the corn growth period without increasing any production cost. It is an effective technical measure to increase production and increase efficiency, which is easy for the masses to accept and application. At present, corn is in the late growth stage, and is about to enter the mature harvest period. However, this year's corn during late and late periods of cloudy and rainy weather will affect the development of 1000-grain weight and yield. Therefore, in this year's special climate conditions, promote the use of corn. The late harvest technology, the correct grasp of the corn harvest period, and extension of the grouting time are important links to increase grain weight, increase corn yield and quality, and increase grain production, farmers' income, and agricultural efficiency.
First, the harvest characteristics of the current production of compact corn varieties have many "false cooked" phenomenon, that corn leaves whited earlier and the grain has not stopped filling, these varieties are often harvested in advance, resulting in waste of light and heat resources, corn yield potential Failure to give full play has affected the growth of food production. The harvest of corn should be changed in the past. “The yellow leaves of the loquat will be hardened and the grain can be harvested†as “the loquat leaves dry, the black layer appears, and the grain milk line disappearsâ€. Generally, they can be harvested 7-10 days later.
Second, the harvest time Corn is fully mature, the largest grain weight, the highest yield. The reason why corn can be increased by appropriate late harvest is not completely achieved in the production of summer corn. The people are mainly worried about delaying the sowing of wheat and causing a reduction in wheat production. With the popularization of agricultural machinery, the time from corn ploughing to wheat planting has been greatly reduced. Properly postponing the corn harvest period in normal years does not affect timely wheat breeding. According to local production practices, the harvest can generally be postponed until October 5 to October 10, and wheat can be sown on or about October 15th to ensure that the wheat and corn harvest will be harvested throughout the year.
Third, the effect of increasing yield The longer the time of corn filling, the greater the intensity of grouting, the higher the corn yield, so extending the grain filling period is an important way to increase the yield in the later period of corn growth. According to the experimental data, from the beginning of the waxing of the wax to the ripening period, the corn will increase by 3-4 grams per 1 grain per night and increase the yield by 5-7 kilograms per mu. If the grain is filled by 10 days in the evening, the grain filling period can be extended to 50 days. Above, the increase of mu can reach more than 50 kg. In addition, postponed harvesting of corn kernels is full and uniform, with smaller grains and pods, lower grain water content, high protein content, and good commercial quality, and is also convenient for threshing and storage.
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