The phenomenon of "bifurcation" of corn is caused by the inherent intrinsic properties of corn and the external growth environment.
Corn belongs to cereal crops, and “bifurcation†is one of the inherent characteristics of cereal crops. There is a axillary bud at the leaf axils of each node of the corn. When induced by external factors, the axillary buds will grow and develop, forming a "bifurcation" in the roots. Different corn varieties have different tillers, and some varieties are prone to tillering in the field. For example, silage corn varieties generally have strong tillering power, which is required for production to obtain higher stem and leaf yield. Sweet waxy corn varieties have strong tillering and are prone to tillering in the field. Ordinary corn varieties have weak tillering power, and the field is generally less prone to tillering.
The external growth environment is the inducing factor for the "bifurcation" of corn. There are three main factors that induce corn "bifurcation":
One is the improper use of herbicides. The post-emergence herbicides nicosulfuron and acetochlor have a high concentration of application. The spraying period exceeds the 5th leaf stage of the corn, and the medicament is sprayed onto the corn core, causing slow growth of the corn heart leaves, plus the majority of the people's seed fertilizers and sowing fertilization. The amount of corn is high, and the growth of the lower part of the corn is fast, resulting in an imbalance of growth of the corn. The corn is forked from the roots.
The second is the growing environment. In an environment with high fertility, sufficient sensation, and high temperature, it is prone to “bifurcationâ€. Different varieties have different levels of sensitivity to external factors.
The third is planting density. In the early stage, the fertilizer was used too much, the planting density was too small, and the phenomenon of tillering was easy to occur. This was the most obvious in the cultivation of tillering varieties. Therefore, reasonable planting density is beneficial to control the occurrence of tillers.
Fourth, pests and diseases. When corn is damaged due to factors such as corn thrips and Other diseases such as pests and viral diseases, it will stimulate the growth and development of axillary buds in the roots, and the "bifurcation" caused by pests and diseases is mostly individual plants.
Most of the "bifurcation" of corn occurs in the seedling stage. These "forkings" can not only become spikes, but also consume nutrients and water. Therefore, once the “bifurcation†is found, it should be removed as soon as possible, and the removal will not affect the output.
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