When is the better time to harvest wheat?

The best harvest time for wheat is when the wheat is well-done, not when the wheat is ten ripe, that is to say, the wheat wax ripening stage is the best harvest time. You may have heard this before, but what is the specific scientific reason? Let's take a look.

What are the characteristics of wheat wax ripening stage?

1. Grain. The grain is generally orange in different shades. After cutting with a knife, the cross section is waxy and slightly hard, only slightly soft in the groin, the empty stomach has disappeared near the groin, and slight fingernails can still be squeezed out on the back of the grain.

2. Leaf tip, leaf blade and leaf sheath of wheat plant. The leaf tip, leaf and leaf sheath of wheat plant turn yellow in sequence, the stem turns yellow from bottom to top, only the upper leaf and its vicinity are still green, the stem under ear turns yellow, the flag leaf sheath and the penultimate node turn yellow but not dry, and the whole plant shows yellow, green and yellow.

3. Wheat fields. Long-distance observation of the wheat field, if the wheat plants are yellow above and below, and there is a green belt in the middle, it can be concluded that the wheat field has entered the wax ripening stage, and this is the most suitable time for harvest.

Why is wheat harvested in the middle and later stages of ripening?

In the early stage of wheat ripening, the grain begins to harden, and the grain begins to harden slowly from the milky shape. If the wheat grain is taken out and scratched with a finger, it will show a waxy shape.

In the middle stage of wheat ripening, the whole plant of wheat turns withered yellow, but the stalk of wheat is still flexible, so this is the best time for artificial harvest.

At the end of wheat wax ripening, the accumulation of dry matter in wheat grain reached the peak, the quality was good, the yield was the highest, and the physiology was completely mature. It is generally 2-3 days earlier than the mature period (the wheat grain has completely hardened), which is the best time for machine harvesting.

Why not wait until the wheat is harvested?

Today, most plots of wheat are harvested by machines, and some farmers wait until the wheat is fully ripe.

When the wheat grows to the full maturity stage, the wheat stem dries up, the grain volume shrinks, the water content decreases, and it is dry and hard, so it is not easy to be broken by nail extrusion, and it is easy to be threshed and not easy to be broken by mechanical harvesting. However, the wheat stems, stalks, leaves and roots at the mature stage can no longer produce and accumulate nutrients, but they still need to consume nutrients for respiration. Wheat nutrients will pour into the straw, resulting in a decrease in grain weight, and the yield per mu will be reduced by 30 kg to 50 kg.

In addition, if the weather is overcast and rainy at this time, wheat is easy to sprout and mildew, the quality becomes worse, and the loss is greater. Therefore, to grasp the timing of harvest, timely rush to harvest is very critical, do not wait until noodles mature to their own grain before harvest, then the reduction in production is not a matter of 100 jin less.

Wheat harvest time:

The best time of day for wheat harvest: 9:00-11: 00 00: 00: 00: 18:00

Now it is basically the combine harvester operation, choose the above two time periods.

The dew on the straw had not completely evaporated before 9:00; from 11:00 to 16:00, the weather was too hot and the straw was dry; after 18:00, the dew slowly began to appear.

During these two periods, the wheat is not wet and easy to thresh, and it is not too dry. If the straw is too dry, the wheat grain is easy to collapse automatically and it is not easy to return the grain to the warehouse.