How to Plant Three Crops of Corn in Weihai

Shandong can plant three crops of corn a year;

First, the sowing date of spring corn. According to Shandong's climate, spring corn is suitable for sowing in the open air after Tomb-Sweeping Day, and the year when the ground temperature rises slowly can be postponed to Grain Rain Festival. Sowing corn with plastic film mulching can start sowing in advance to the vernal equinox. Spring corn can be harvested around summer, and green corn can be harvested one month in advance. Spring corn grows for a long time, and is usually harvested in 100 ~ 120 days, with the highest yield and the best quality.

Sowing date of summer corn. Summer corn is usually sown in long summer internodes, and the growth period is about 90 ~ 100 days. The yield and quality of corn are not as good as that of spring corn. Under normal circumstances, summer corn can be sown between long summer and the end of summer heat. The harvest time is generally between the end of the hot summer and the first frost and cold dew.

Third, the sowing date of autumn corn. The sowing time of autumn corn is very limited, especially for harvesting grain corn. It is necessary to ensure that the normal growth and development cycle of corn is generally between 90 ~ 100 days, and early-maturing varieties can be selected for sowing. Generally, the sowing time of autumn corn must be in the field within the summer festival at the latest, otherwise, when the corn stops growing due to low temperature at the turn of autumn and winter, it will not be guaranteed for 90 ~ 100 days, which will inevitably affect the harvest and cannot guarantee the quality and yield of corn. In autumn, green corn can be sown in summer and around the solar term, and harvested when the corn stops growing.