Corn plants grow out of the ya, in the end, do you want to break off?
In some areas with warmer climates, spring maize is sown earlier, and seedlings now grow to 30-40 cm tall. Before the corn seedlings begin to joint, farmers often find that the axillary buds at the base of some plants grow multiple side branches, which are commonly known as "branches" and "yazi", and its scientific name is "tillering". The long-standing and debated debate about whether or not to break the corn squirrel presents two diametrically opposed views.
Some old farmers believe that "corn buds can enhance photosynthesis, breaking off may cause yield reduction"; some farmers believe that "retaining branches does more harm than good, ineffective tillers will compete for the nutrients of the main stem, insisting on breaking off".
It just so happens that I have personally experienced the argument scene of insisting that the corn squirrel is not broken.
While wandering around the other day, I met a zhang uncle who was managing his family's one-acre cornfield. Looking closely, I found that almost every corn seedling in his family had different degrees of tillering.
So, curiously, he asked, Uncle, your corn seedling has grown a, why don't you break it? ”
"I've grown corn for most of my life, and I've never heard of it, and this guy has to be broken," replied the uncle in surprise. From the look in his eyes, I seemed to see his implication that "you young man is also too ignorant."
In the eyes of my uncle, I was a doll, thinking that I would only talk on paper. Thinking of this, I am not in a position to argue with it, but instead use a roundabout compromise tactic to share some of the experiences of extracurricular practice during college.
In fact, maize tillering is a characteristic of cereal crops. In other words, tillering is an inevitable physiological process before the corn plant is jointed, and it is basically inevitable.
Because of the presence of axillary buds at the base nodes of the main stem of maize, tillers can theoretically develop, but the top edge of the corn plant is strong and usually does not form tillers. However, if the external environment affects it, when the top advantage of corn is weakened, the axillary buds at the base will form tillers. Even if the corn varieties sold on the market, such as Zhengdan 958, Jundan 20 and other varieties, it is impossible to completely distinguish tillers.
In general, the phenomenon of maize tillering, in addition to being related to the sown varieties, when the soil drought and lack of water, the seedling transplanting is too thin, the seedling stage is long-term high temperature, pests and diseases, etc., the top advantage of the corn plant will be weakened, and then it is easy to make the base axillary buds form tillers.
<h1 class="pgc-h-arrow-right" > should the tillers of corn be broken? </h1>
During his studies at the University of Agriculture, the teacher assigned extracurricular practical assignments on "whether corn tillers are retained". I remember spending months doing a controlled experiment to verify whether the corn tillers should be broken.
Experimental settings: 100 holes were sown with the same corn seeds, and 80 seedlings with robust growth, close size and height, and tillers were selected for control experiments. The experimental group consisted of 40 plants that broke off tillers, and the control group was 40 plants that retained tillers, and the field management during the period was the same.
The test results were:
1. The seedlings in the experimental group (breaking off tillers) started to joint earlier than the control group (retaining tillers) seedlings.
2. The incidence of disease in the later stage of the experimental group was lower than that of the control group.
3. The total yield of plants in the experimental group was higher than that of the control group.
4. Although the lateral branches of the control group formed fruit spikes, they did not develop into corn cobs.
The analysis of the reasons for the large difference can be summarized into several points: retaining tillers will cause nutrient competition between the side branches and the main stem, and as a result, the nutrients obtained by the main stem are reduced, and its growth potential is naturally inferior to that of the corn plants that break off the tillers. Corn plants that retain tillers have poor inter-row light transmission and ventilation, resulting in low photosynthetic effect. Plants that retain tillers, the spikes on their side branches have not developed into corn fruits, that is, they consume limited nutrients, but they have done useless work!
It can be seen from this that the tillers of corn should be broken and not left; the benefits of breaking off are large, and there are many drawbacks of retention; and those that can be broken should be broken off as much as possible.
<h1 class="pgc-h-arrow-right" > how to break off the tillers of corn? </h1>
Although it is recommended to break off the tillers of corn, there are 3 points to pay attention to when actually operating:
1. Seize the moment. Generally speaking, in the corn seedling stage and the big horn mouth stage, the tillers at the base of the corn plant are broken off in time. The specific time is selected at 10-17 o'clock on a sunny day, which helps the wound to heal quickly.
2, the method is appropriate. It is recommended to use sterilized scissors to cut off the side branches 1-2 cm above the intersection of the main pole and the side branches (tillers). This operation can break off the tillers without damaging the main rod.
3. Adapt to local conditions. If the planting area is large, the plants that appear tillers at the seedling stage, grow multiple tillers, and tillers grow vigorously can be used as key objects, and the tillers can be cut off to avoid increasing labor costs. If the tillers appear after the corn blooms, it can be broken or not, and the tillers at this time have a very small impact on corn yield.
After some arduous science popularization, Zhang Dabo had a new understanding of whether the corn tillers were broken off, and finally accepted the suggestion that it was advisable to break and not to stay. However, in practice, there are still many "Uncle Zhang" who still believe that corn tillers cannot be broken, and think that the more tillers, the better. For this realization, I am really helpless.
What do you think?