In 2020, the total output of corn in China reached 261 million tons, an increase of 4 million tons compared with 2019. Entering the middle of May, the spring corn in most parts of China has already emerged, and after the corn seedlings are out of the big horn stage, the corn plants often appear tillering, commonly known as "long yazi". Many people may wonder: "Should the corn squirrel be broken"?
Corn tillering is a normal phenomenon, and different corns are only the difference between more and fewer tillers. Corn belongs to the grass family, almost all grasses below the ground or near the ground at the armpit buds will grow branches, such as wheat, rice, corn, sorghum, Mexican corn grass, etc. will be tillered, like a grain of wheat can be divided into hundreds of tillers, and can extract more than 100 ears of wheat.
<h1 class="pgc-h-arrow-right" > corn squirrel (branch) should it be broken off? </h1>
Corn sprouts can have 3 adverse effects on the growth of corn:
Effect one: the branches will consume the nutrients of the soil in vain, and the existence of the branches is bound to compete with the main stem for nutrients. The branches of corn will not develop into corn fruits, which are invalid tillers, and the stems and leaves that grow out of them will consume a lot of nutrients in vain, and the existence of branches is not conducive to the thickness of the main stem, which will lead to weak plant growth.
Corn is a nitrogen-loving crop, and the branches mainly compete for nitrogen during the growth process, and the main stem is inevitable to reduce yields without sufficient nitrogen supply.
Note: Some people think that corn shoots increase the leaf area, which can enhance photosynthesis, and the stronger the photosynthesis, the more organic matter is synthesized. However, the organic matter synthesized by photosynthesis of the branches will not supply the main stem to grow at all, and their existence is a competitive relationship.
Effect two: branching will consume soil moisture, which is not conducive to the growth of the main stem of corn. Maize seedlings have weak drought resistance, and the relative moisture content of suitable soil is more than 80% from sowing to filling maturity. The growth of the branches is bound to absorb the moisture of the soil and affect the growth of the main stem.
Secondly, the growth of the yazi will increase the leaf area of the corn, and the leaves on the yazi will consume a lot of water in the soil due to transpiration, and the waste of soil moisture will affect the growth of the main stem.
Effect three: Branching will reduce the ventilation and light transmittance of the field. Corn is a light-loving crop, in the growth period to ensure that the light and heat resources are sufficient, corn grows branches, is bound to reduce the ventilation and light transmittance of the field, corn plants are too dense will compete for sunlight, thereby causing the plant to grow, the stem of corn will become thin and weak.
In addition, the poor ventilation and light transmittance of the corn field can easily lead to the breeding of diseases and insect pests, which will greatly increase the risk of corn diseases and insect pests.
<h1 class="pgc-h-arrow-right" > corn plants have great drawbacks, so what are the reasons that tend to cause corn to grow? </h1>
The root cause of corn sprouts is "the presence of axillary buds at the base of the main stem of corn", which have the ability to divide tillers into new plants. Generally, when the top advantage of the corn plant is inhibited, the corn will grow "yakuza".
Supplement: The plant's apical advantage inhibits the growth of the lateral buds below it, and when the apical advantage is strong (producing more auxin), the lateral buds will be dormant.
For example, American corn varieties, soil drought, planting is too thin, corn suffers from diseases and insect pests, sufficient water and fertilizer, and spraying dwarfing agents at the seedling stage can easily lead to corn tillering.
One of the most important influencing factors is the "variety problem", the tillering rate between different varieties varies significantly, the original corn is a multi-branched crop, but with the long-term selection of people, under normal climatic conditions, corn is mostly not tillered or less tillered.
To sum up, the corn "yazi" will compete with the main stem for water and fertilizer, and it will also reduce the ventilation and light transmittance in the field, and the existence of the corn yazi will weaken the growth and development of the main stem and seriously reduce the yield of corn. Plants that do not break corn seeds, the corn cob is relatively small, and the size is uneven, which will lead to a reduction in corn yield of about 10%. Therefore, we should break the corn as soon as possible.
The time to remove corn shoots is best after 9 a.m. to before 5 p.m., and a higher temperature is conducive to rapid wound healing and reduces the chance of bacterial infestation and pest infestation.
Do you grow corn to break corn "yakuza"?