Corn is about to enter the harvest period, but many farmers are watching others collect their own income, do not know how to judge whether the corn in their field has reached the harvest period. In fact, the corn harvest is very knowledgeable. Experts say that corn can increase production by more than 100 kilograms in a timely manner.
How to accurately determine the maturity of corn
Look at the characteristics of corn growth: the maturity of corn needs to go through three stages: milk maturity, wax maturity and maturity. 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. Therefore, the ripening period is the best harvest period for corn. Whether the corn enters the ripening period, in the normal maturity of the plant, it can be seen from the appearance characteristics: the middle and lower leaves of the plant turn yellow, the leaves of the base are dry, the yellow leaves of the ear are yellowish white and loose, the grain milk line disappears, the black layer Appears, hardens, and presents the inherent color of the variety.
When the black layer of corn grains begins to appear and gradually deepens, it indicates that the corn tends to mature. Corn harvest can also increase the amount of protein and amino acids. In addition, the corn kernels harvested in a timely manner are full and full, relatively uniform, small particles and glutinous grains are significantly reduced, and the water content of the granules is relatively low, which is convenient for threshing and storage.
According to the blade judgment: There is data showing that when there are 7-8 green leaves and 5 green leaves left, the 1000-grain weight difference is more than 10 grams, and the total yield is one acre. It is normal to have a difference of several tens of kilograms. Therefore, when the green leaves of corn plants are no more than 5 pieces, it is the best harvest period.
Look at the pollination time: According to statistics, when the corn is pollinated for 40 days, the 1000-grain weight of the corn is about 310 grams. At 45 days, the 1000-grain weight is about 330 grams. If it reaches 50 days, the 1000-grain weight can reach 340 grams, but more than 50 days. The 1000-grain weight has a downward trend, so when the corn is pollinated for 45-50 days, it is the harvest period of corn.
List of corn receipt times around the country
Generally in September-October, the whole country is inconsistent. Corn planting is divided into spring sowing and summer sowing. The north is mainly spring sowing. In other places, it is broadcast in summer and spring. The maturity of northern corn is generally from September 15 to September 23, and the south is mostly after mid-October.
Hebei corn harvest time: Summer maize in Hebei Province is generally mature from mid-September to mid-October, and spring sowing generally matures from early September to mid-September.
Henan corn harvest time: the corn harvest period in the north of Henan and western Henan is suitable from October 4 to 13, and the harvest in the hilly and mountainous areas in early October is appropriate; the harvest period in Henan and Henan is from October 8 to On the 17th; the southwestern Henan region is suitable for the period from October 15 to 23; the southern Henan region is for the period from October 17 to 26.
Shaanxi corn harvest time: Summer maize in Shaanxi Province generally matures from late September to mid-October.
Because the moisture content of corn collected in the evening is generally about 30%~40%, do not pile up after harvesting. After harvesting or picking up the skin with a skin stick, return it to the home and use the artificial time to dry the skin. Listen to the weather forecast, dry in sunny weather, when the water content is 20%~30%, timely degranulation and drying, drying to corn moisture content below 14% is appropriate.
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