Summer harvest in autumn, fertile soil and fruit
It has passed the autumn and the corn is getting closer. The harvest period of corn is generally from August to October. It is different from all over the country. Correctly grasping the harvest period of corn is especially important for ensuring stable and high yield of corn.
How to master the harvest period? Generally speaking, the corn late harvesting technology is to extend the corn filling time and increase the grain weight as much as possible without affecting the timely sowing of wheat, thereby increasing corn yield and improving corn quality.
There is a saying that "the corn is harvested for seven or eight days, and the product is full. If the farmers do this, it will not be difficult to increase production by 10%!"
However, many farmers' friends harvest corn, either by watching other people's income, and they are also rushing to catch up with it, or they are rushing to collect their family members, so as not to delay going out to work. Some people even know the truth that "corns can increase production in a timely manner, but it is not particularly clear when to collect late."
Let's see how to increase corn production by late harvest.
The benefits of late corn harvest
1. Increase grain filling time and increase production.
Only when the corn is fully mature, the grain weight is the highest and the yield is the highest. The harvest is early, the maturity is poor, the grain weight is low, and the yield is reduced. In some places, there is a habit of early harvesting, which is often harvested when the leaves of the ear are just white. At this time, the 1000-grain weight is only about 90% of the late maturity period, and the yield is generally reduced by about 10%.
2. Improve product quality.
Appropriate late harvesting of corn not only increases starch content in the grain, but also increases other nutrients. The accumulation of nutrients in the grain is a continuous process. As the grain is enriched and heavier, nutrients such as protein and amino acids are gradually accumulated, reaching a maximum at the late maturity stage.
3. Easy to thresh and store.
The corn kernels harvested in a timely manner are full and full, the grains are even, the small particles and the glutinous grains are obviously reduced, the water content is low, and the threshing and storage are convenient.
Technical points for increasing corn yield in late harvest
First, the best harvest period of corn
Farmers are used to yellowing corn stalks as a sign of ripening of corn. This is extremely inaccurate. In general, the harvest period of corn is postponed until around October 5, and the best period of corn harvest is called maturity. When harvested, corn has the highest 1000-grain weight and yield.
Under normal circumstances, the main characteristics of corn entering the ripening period are: the bracts are yellow and white, loose, the seeds become hard and shiny; the "milk line" disappears; the black layer appears at the tip of the grain; the water content drops below 33%. The highest weight and yield.
Second, in the actual operation process, you need to pay attention to three points:
1. Grasp the signs that the corn is fully mature.
At this time, the grain will become hard, the grain filling line will move down to the base of the grain and finally disappear completely; the black layer of the base of the grain will form, the grain will have the inherent color and characteristics of the variety, and the ear leaves will be dry, fluffy and white.
2. Postpone the harvest for ten days.
In the past, we were used to receiving goods 40-45 days after corn pollination. In fact, it is a good choice to postpone ten days and harvest it about 55 days after pollination.
In this way, the corn can be fully utilized in the late autumn, which is conducive to the accumulation of climatic resources of dry matter, and the corn filling time should be extended as much as possible to maximize the potential of the corn kernel.
3, according to local conditions, master the local corn maturity.
China's vast land and natural resources, the maturity of corn in each region must be very different. For example, the sowing period of corn in Henan and Hebei is generally from late May to mid-June, and the harvest period is generally at the end of September and early 10th. This requires local residents to grasp it.
Third, the corn harvest increased late, "six steps"
one look"
Looking at the characteristics of corn growth, because corn is different from other crops, the grain is born on the ear, and it is not easy to fall off after maturity, and the post-ripening effect can be completed on the plant.
Second "fixed"
The best harvest period for corn. Verify that the corn is in the ripening period.
Three "push"
Estimate the corn late harvest time. Under normal circumstances, according to the normal growth period of corn, it is advisable to extend for about 10 days.
Four "received"
The collection should be fast and timely. Look ahead to the weather forecast in advance, arrange personnel, vehicles, etc. to strive for a one-time harvest.
Five "peeling"
Do not stack after harvest and use artificial or corn peeler for peeling.
Six "sun"
Sun: The moisture content of harvested corn is generally 30%~40%. Pay attention to the weather forecast, dry in sunny weather, and degranulate in time. Drying to the grain moisture content below 14% is appropriate.
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