The cause of short bracts of Maize

Corn is a very popular food crop, which has a very large planting area in our country. The planting technology of corn is not very difficult, and the yield is relatively high. However, if the management is not good, there will often be many problems in the growth of corn, affecting the yield of corn and reducing the efficiency of planting. And the short bracts of corn is one of them. So what is the reason for the short bracts of corn? The following editor will give you a brief introduction, let's have a look!

1. Drought and water shortage

The demand for water in the growth of corn is very large. We must often water in the planting to meet the water needs of corn growth, especially in the jointing stage, the jointing stage of corn is in the differentiation stage of corn ear, at this time the demand for water will be greater. If there is a high temperature and lack of water at the jointing stage. Then the differentiation time of corn bracts is different from that of ears, which leads to the phenomenon of short bracts in corn.

2. Weather reasons

The weather is also the main reason for the short bracts of corn. For example, in cloudy and rainy days, light and temperature can not meet the growth needs of corn. Affect the photosynthesis of maize, if the photosynthesis is affected, the nutrient accumulation is insufficient. As a result, the growth rate of bracts decreased, the growth progress was not consistent with the ear, and could not grow to the same length as the ear. The ear exceeds the length of the bract, resulting in leakage of the top and other adverse phenomena.

3. Planting is too dense

When planting corn, the planting density needs to be strictly controlled. It must not be planted too densely, if it is too dense, it will lead to insufficient growth space of maize plants and affect the growth of each plant. Reduce the permeability of corn fields, resulting in an increase in internal temperature, beyond the bearing range of corn, and lack of light, which will have a great impact on the growth and seed setting rate of corn bracts, and seriously hinder the growth of corn.

4. Lack of micro-fertilizer

Nutrition is an essential substance in the process of corn growth. When topdressing, many farmers only pay attention to the disobedience of basic elements such as nitrogen, phosphorus and potassium, while ignoring trace elements such as boron. If there is boron deficiency in corn, it will inhibit the formation of pollen in male flowers and decrease the activity of maize. If zinc deficiency, then the old leaves of corn plants will appear many white spots, and then expand to form a day shift, resulting in leaf death, shortening of internodes, resulting in ear deformity.

5. How to prevent short bracts of corn

First of all, we should do a good job of fertilization, in order to improve the time of panicle fertilizer application, it is best to apply panicle fertilizer before and after the heading stage. Then we should often water the soil to avoid drought, especially when the female ear comes out of the ear, we must ensure that there is enough water to promote the normal growth of the bracts. When planting, we also need to do a good job in the selection of varieties, such as red axis varieties are very prone to short bracts, lack of grain baldness and other adverse phenomena.

The above is a brief introduction to the reasons for the short bracts of corn. There are many reasons for short corn bracts, most of which are caused by improper management, so when planting, we must do a good job in management to ensure the normal growth of corn. That's all for today's introduction. This article is for reference only. I hope it can help you all.