Causes of corn tiller and prevention measures

Causes of corn tiller phenomenon:

1. Variety characteristics. Maize tillering is one of the intrinsic characteristics of cereal crops. Different varieties show different tillering characteristics under the same cultivation conditions. For example, when the Xianyu 335 corn hybrid was planted in our county, it exhibited strong fertility. Generally, the number of tillers reached 1-3, while those of Zhengdan 958 and Yandan 20 were not distributed in normal conditions.

2. Drought effects. Severe drought during corn growth, resulting in growth and development disorders in the upper part of the main stem, often there will be childbirth.

3. Influence of population density The population density is too small and bifurcation is prone to occur. This is most evident in the cultivation of strong tiller varieties. If the density is too small, the delivery is not strong. Therefore, a reasonable population density can help control the occurrence of labor.

4. The impact of disease. When maize suffers from certain diseases, childbirth can also occur. In the case of downy mildew, there are many infertile lateral branches on the stem segments of the shoots of the corn. The main stems are tall and the stems are thin and easy to invert. There is no economic output at all. The occurrence of corn downy mildew is mainly due to the combination of conditions such as low temperatures and rains during growth, or crop damage in corn fields, as well as field closure, lack of sunshine, and poor ventilation.

5. Nutrient imbalances lead to childbirth. I conducted detailed investigations to farmers and agricultural technicians in my county. The results showed that the phenomenon of maize tiller was discovered occasionally before, but it did not affect production. In recent years, this issue has obviously affected local corn production. According to the understanding of fertilization and land fertility in some plots, it was found that these plots were mostly inconvenient for traffic and they did not apply or reduce farm manure for many years. Local farmers generally do not apply base fertilizer, and only use a single nitrogen fertilizer such as urea as top dressing. The top-dressing period is generally during the mid-late stage of the seedling stage until the big bell-mouth. This fertilization method is not only unfavorable to increase the soil's comprehensive fertility, but also forms nutrient “break” during the middle stage of maize growth. It can be inferred that the supply of "three elements" in maize seedlings is unbalanced and nitrogen deficiency is a common feature of these plots. Through comparative analysis, it can be concluded that imbalance of nutrients is also one of the reasons for the delivery of corn in these plots at the seedling stage.

Maize tiller control:

1. Variety selection. By experimenting with planting or comparison, select varieties with weak or no tiller.

2. Reasonably dense planting. According to the variety characteristics, such as plant height, leaf angle, etc., to determine a reasonable population density. To prevent the occurrence of tillers due to excessive density due to excessive density. A reasonable line spacing of a variety can only be determined by comparing tests.

3. Manually remove cultivator soil. The tillers produced during the seedling stage and the big bell stage of maize can only be removed manually in conjunction with the cultivator. The method is to remove the tiller first, and then carry out cultivator cultivation. Usually in the seedling stage combined with high cultivation soil can effectively inhibit delivery.

4. Improve irrigation conditions in the field to prevent downy mildew and other diseases. To grow corn, care must be taken to avoid serious shading or blind lands, to plant large and small rows, to maintain a reasonable row spacing, and to determine a reasonable direction, which can effectively improve the ventilation and light transmission in the field, and prevent disease and childbirth.

5. Scientific fertilization. Not only to adopt soil testing and formula fertilization, but also to look at seedlings and fertilizers, but also pay attention to the overall impact of fertilization on soil fertility and long-term improvement, increase the soil's ability to adjust and supply solid nutrients, moisture, and gas, in order to increase the resilience of crops , to reduce the occurrence of childbirth due to imbalance of fat points. At this point, it is necessary to give top priority to the re-application of farmyard fertilizers, and to apply the farmyard fertilizers as the basis for applying chemical fertilizers and better exerting their fertilizer efficiency. Under this premise, fertilizers should be reasonably applied according to the crop's fertilizer requirement characteristics and soil nutrient status. Fertilizer should be applied in advance at the seedling stage, and top-dressing fertilizers should be dominated by diammonium phosphate and urea.

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