Chasing the fertilizer and controlling the fall season

At present, the province's 45.67 million mu of corn has entered an important period of growth and development and a critical period of field management. Overall, the growth process of spring maize and wheat husk corn is relatively normal, while the growth process of wheat stalk corn is late, and this year, the rain is too high, the corn seedlings grow too fast, the underground root system is relatively weak, and the mid-late period is increased. Risk, for this expert advice ---

    Chasing the fertilizer and controlling the fall season

    WASHINGTON (Reporter Zhao Hongmei) Recently, the Provincial Department of Agriculture Provincial Organization expert advisory group of experts corn, Qinhuangdao, Tangshan, Langfang, Baoding, Shijiazhuang, Xingtai, Handan and other cities were growing corn field trips, study results show that the whole The province's 45.67 million mu of corn entered an important period of growth and development and a critical period of field management. In general, the growth process of spring corn and wheat husk corn is relatively normal, and there are many problems in the wheat stalk live corn.

    Experts believe that, influenced by frequent rainfall during the wheat harvest, the wheat harvest progress in some areas affected sowing of summer corn has also come to delayed sowing after the June 20 summer corn occupy a certain proportion, which is part of the corn sowing than normal to Postponed for 5 to 7 days. At the same time, due to the influence of the frequent rainy weather process in the previous period, the seedlings of the wheat seedlings were always in a state of rain and rain, which caused the seedlings to grow weak, the seedlings were high and unreliable, and the risk of lodging in the middle and late stages increased. In some areas, due to excessive rainfall during seedling stage, waterlogging or smut damage occurred in the field, and seedling growth and development were affected, mainly due to slow developmental development and de-fertilization of seedlings.

    In order to capture the harvest of autumn grain this year, experts suggest that for summer maize plots with excessive soil moisture, timely cultivating should be carried out to reduce soil moisture, improve soil permeability, promote root growth and increase root absorption capacity. For summer corn damaged by waterlogging, timely ditch and apply appropriate amount of quick-acting nitrogen fertilizer to supplement plant nutrients and promote plant growth as soon as possible. Generally, it can be combined with the mid-cultivation operation, and the urea is applied 10 to 15 kg per mu .

    The continuous rainy weather will easily lead to the growth of the base section of the summer corn after the jointing stage, which will increase the risk of lodging in the middle and late stages. To this end, experts suggest that chemical control before the jointing period (6 to 8 leaves ) can effectively shorten the internode elongation of the plant and improve the lodging resistance. When carrying out chemical control, pay special attention to the mastery of the concentration of the drug, and do not spray or leak. At the same time of chemical control and prevention, the northern spring maize area and the spring and summer sowing transition area should strengthen the prevention and control of second-generation armyworms and strengthen the monitoring of the possibility of three generations of armyworms.

    Experts believe that whether it is spring corn or summer corn, the late harvest at the appropriate time and the improvement of grain maturity are an important measure to increase production. In particular, this year's late-planting of the wheat stalks of live corn, the implementation of the appropriate late harvest is particularly significant. According to the maturity of the late corn and the need for planting of the lower crops, it is reasonable to determine the late harvest time of the corn, and strive to increase the grain weight and increase the corn yield.