Due to the high temperature and high humidity during the whole growing season of summer maize, corn is vulnerable to many diseases. Therefore, it is particularly important to improve the quality of sowing, cultivate high-quality seedlings, and lay a solid foundation for the entire growth period. To improve the quality of the sowing and ensure the healthy growth of the corn, the following issues should be noted when planting:
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First, choose a variety. The variety is mainly medium-to-durable and dense, which is conducive to increasing density and increasing yield. The types of resistant varieties are Zhengdan 958 and Yuanyu 13 .
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two, Â When harvesting at the right time, it is necessary to harvest the wheat in time and plant the corn when it is grabbed. Strive to achieve "the day of the harvest on the day of the broadcast", "morning harvest in the afternoon". Measures such as first sown and then smear water can be used to speed up the planting process. The early broadcast of grabbing time can prolong the growth period of corn and increase the yield significantly.
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Third, increase the density appropriately  Planting density is an essential factor in the construction of high-yield populations. Different regions are suitable for different varieties, and different varieties have different requirements for planting density. Choosing a dense variety and appropriately increasing the density is an effective way to produce high yields. It is necessary to set the density according to the variety and adjust according to the ground force of the own plot. The upper limit of fertility is high, and vice versa. Early sowing should be thin, late sowing should be dense, late-maturing large-ear type varieties should be thin, medium and early-maturing varieties should be dense. The planting density of compact and dense-tolerant varieties is generally between 4000-5000 plants / mu, and the high-yield fields are controlled at 4500-5000 plants / mu.
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Fourth, scientific fertilization. According to the survey, the fertilization method, single fertilization and one-shot fertilization method can not meet the nutrient demand of summer maize growth and development stages, and it is one of the most important reasons for the low yield of corn. The fertilizer requirement for corn is the early stage of heavy phosphorus and potassium fertilizer, and the later heavy nitrogen fertilizer. 40 kg of compound fertilizer with a total nutrient content of 45% or more should be used as the base fertilizer.
Source: Gaoyang County Agricultural Bureau
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