In rural areas, experienced farmers know this sentence:
"Nine mature, ten percent, ten mature, one lost."
This is to say that the best harvest time for wheat is when the wheat 9 matures, not when the wheat matures, that is, the wheat waxing period is the best time for harvest. Everyone may have heard this, but what is the scientific reason? Today we will make a detailed introduction to the maturation and harvest of wheat.
What are the characteristics of wheat waxing?
1, grain. Grains are generally different shades of orange, with a knife cut to see the cross-section was slightly waxy hard, only slightly soft abdominal groin, abdominal short-skin has disappeared, the back of the grain can still squeeze a slight nail print.
2, wheat leaf tip, leaf, leaf sheath. The order of the tip, leaf and sheath of the wheat plant turns yellow, and the stem turns yellow from bottom to top. Only the top leaf and its vicinity are still green, the stem below the ear turns yellow, and the flag leaf sheath and the penultimate section turn yellow and dry. The strain was yellow, green and yellow.
3, wheat fields. Observing the wheat field from a distance, if the wheat plant is yellow all above and below, with a green belt in the middle, it can be concluded that the wheat field has entered the wax ripening period, and harvesting is the most appropriate.
Why does wheat have to be harvested in the middle and later stages of waxing?
Wheat grains begin to harden in the early stage of waxing, and the grains gradually harden from the milky shape. If the grains are removed with a finger, they will appear waxy.
Until the middle of wheat waxing, the whole wheat plant turns yellow, but the stalks of wheat are still flexible. This time is the best time for artificial harvesting.
At the late stage of wheat waxing, dry matter accumulation in wheat grains reached a peak, the quality was good, the yield was the highest, and the physiology was fully mature. It is generally 2-3 days ahead of the maturation period (grain is completely hardened), which is the best time for the machine to harvest.
Why can't wait until the ripening period of wheat is harvested?
Most of today's wheat fields are machine harvested, and some farmers wait until the wheat is ripe for harvest.
When the wheat grows to full maturity, the wheat stems are completely dry, the grain size is reduced, the water content is reduced, and it is hard and dry. It is not easy to crush with nails. At this time, mechanical harvesting is easy to thresh and is not easily broken. However, mature stems, stalks, leaves, and roots of wheat have no longer been able to produce and accumulate nutrients, but they still need to consume nutrients for respiration. Grain nutrients will fall back into the straw, resulting in a decrease in grain weight. The yield per mu will decrease by 30. Kilograms to 50 kilograms.
In addition, if you encounter rainy weather at this time, wheat is prone to sprouting and mildew, resulting in poor quality and greater loss. Therefore, it is crucial to grasp the timing of harvesting and timely recovery. Do not wait until the small surface has matured until you fall out of the grain and harvest again. At that time, reducing production is not a matter for less than 100 pounds.
Wheat harvest time:
The best time for wheat harvest during the day: 9:00-11:00; 16:00-18:00
Now basically all combine harvester operations, select these two time periods.
Before 9:00, the dew on the straw has not evaporated completely; from 11:00 to 16:00, the weather is too hot and the straw is dry; after 18:00, the dew begins slowly.
During these two periods of time, the wheat is not wet and it is easy to thresh; and it is not dry. If the wheat straw is too dry, the wheat grains will automatically collapse and it is not easy to return the grain to the warehouse.
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