In recent years, many farmers have gradually paid attention to the use of biological fertilizers, but only know how to apply them, but do not know how to make them multiply quickly after application, resulting in weak activity of the biological bacteria applied in the soil, low survival rate and poor effect . So, how can the biological bacteria play their due role after being applied to the soil? The main reason is that the biological bacteria are expensive to "nourish" after being applied to the soil.
Selected varieties The selected varieties require compact plant types and tolerance to dense planting. If the density reaches 5000 plants/mu or more, there is no lodging, no empty stalk, no bald tip, and the average grain weight per spike is more than 200 grams. The growth period is about 125 days in spring and 105 days in summer; seed treatment. Pick out the broken, moldy and spoiled kernels and uncut kernels, choose the same size kernels, soak the seeds for 8 hours, dry them with 40% methyl ethion and 2% lixiu, and dress the seeds at 0.2% of the amount of seeds to prevent coarse shrinkage Disease, seedling blight, smut and underground pests.
1. More spraying of pesticides will speed up the prevention and control of diseases, insects and weeds, but sometimes it is counterproductive and will cause different levels of phytotoxicity to plants, leaves, and roots. Therefore, I suggest farmers friends to spray reasonably, and do not blindly apply pesticides, which may cause unnecessary losses!
A comprehensive understanding of the adaptability of maize to the climate of the planting area at the regional scale is helpful for the selection and promotion of maize varieties according to local conditions, matching the variety characteristics with the regional light and heat resources, tapping the production potential of maize varieties, and maximizing the use of light and heat Resources, reduce the impact of adverse weather conditions, and increase the yield and total yield of corn in Northeast China. Methods In this study, the Zhengdan 958 variety with strong versatility was used as the test material, and the local main planted variety was used as the control. 28 experimental sites were arranged in the range of 40°-48° north latitude during 2007-2009 to carry out multi-site networking and collaboration for many years. The experiment, combined with the meteorological data over the years, analyzed the yield performance, increase potential, growth process and accumulated temperature demand characteristics of Zhengdan 958 in the northeast region. Based on the meteorological data of the northeast region in the past 20 years, the method of geographic information spatial analysis was used to analyze the northeast region. The maturity planting zoning of maize varieties is carried out in order to provide a theoretical and practical basis for the rational layout and promotion of varieties in the spring-sown maize area in Northeast China.