Methods for shortening the growth period of corn to promote early maturity
Corn is an important economic crop in our country. During corn planting, if climate and human factors cause delayed emergence of corn and missing the optimal growth time, this situation will lead to corn failing to mature normally. Otherwise, missing the maturity time, as temperatures begin to drop, early frost will cause the water corn phenomenon, affecting yield and quality. Below, QinNongNet brings you methods to solve this situation. Let's take a look at corn early-maturity promotion techniques.
1. Choose early-maturing varieties
Because of climate factors, the optimal sowing time may be missed, which may affect corn germination and emergence, causing some seeds to fail to germinate and emerge normally. After emergence, the seedlings are weak and uneven, and the hanging dry sprout phenomenon is also likely to occur. At this time, timely reseeding is needed. After reseeding, there is no doubt that harvest will be delayed, but in order to avoid the problem of reduced yield caused by low temperatures, early-maturing varieties should be selected when reseeding. According to local climate conditions, choose early-maturing corn varieties with an accumulated temperature 200-300°C lower than normal maturity. It is best to take sprouting measures, which can provide timely remedy.
2. Reasonable topdressing
If the optimal growth time is missed, in order to harvest at the appropriate time, fertilization must be increased to promote early maturity. When corn grows to the silking stage, apply ammonium sulfate to promote early maturity, applying 10-15k per mu, or spray foliar fertilizer to promote early maturity, using a low-concentration potassium dihydrogen phosphate solution for foliar spraying. If the silking stage is missed, the tassels of corn can be removed in alternate rows to reduce nutrient consumption and allow nutrients to supply seed growth.
3. Peel the husk and sun the ears
In the late filling stage of corn, when the kernels have grown to normal size, the outer husk of the corn ear can be peeled open to expose the kernels on the ear to the air, which can speed up their moisture evaporation. Through this method, corn can generally mature 4-5 days earlier than normal corn, and at the same time yield can be increased by 6%-15%.
4. Dry the whole plant
Similar to the method of peeling the husk and sunning the ears, after autumn when temperatures drop and winter wheat begins to be sown, if the corn still has not matured, the corn can be cut down with the stalks and neatly stacked in the field or in an open space. Note that they should not be piled together, to avoid rot and mildew, which would lead to low corn quality and, in severe cases, total crop loss. Strengthen ventilation, and after the leaves of the corn stalks dry up, break off the ears, dry them in the sun, and then thresh them. If the operation is generally correct, yield can be increased by 10%-20%.
The above are QinNongNet's methods for shortening the growth period of corn to promote its early maturity. We hope they can help you. To learn more about corn planting knowledge, please stay tuned to QinNongNet.