Popcorn grain drought protection
This period of time from tasseling to maturity is known as flowering. There are mainly the following management measures:
Topdressing granular fertilizer. When the amount of topdressing corn in the heading period is insufficient, and there is a phenomenon of defertilization in the later period, it is necessary to top-dress the flowering grain fertilizer to promote corn grain filling, grain weight, and high yield. Fertilizer to grasp the three principles: First, the fertilizer to be early; Second, it should be appropriate, should be determined based on fertility, corn growth; Third, can be sprayed with 0.4% potassium dihydrogen phosphate spray 80 ~ 100 kg per acre.
Drought prevention and drainage. Flowering period is the peak period of corn water demand. Water shortage during this period will affect the formation of grain and the filling is not full, resulting in bald head, lack of grain, grain lean, and reduced yield. Therefore, timely irrigation should be performed in case of drought to meet the moisture demand of corn grouting. However, in the later period of corn growth, the root activity gradually declines, and the degree of endurance gradually weakens. In the event of heavy rainfall or continuous rain, it is necessary to eliminate the spurs immediately. After the row of sorghum, it is best to carry out cultivating, break the compaction, loosen the soil, and enhance ventilation. Extend root vitality.
Prevent lodging. The lodging of corn has a great impact on the yield, so measures should be taken to prevent it. One is to urge Miao Dunshi to be strong; the other is to cultivate cultivator soil, increase the number of supporting roots, and increase the lodging resistance; the third is to spray potassium dihydrogen phosphate on the basis of increasing potassium fertilizer on the basal fertilizer to enhance the toughness of the plant. If an irresistible storm strikes during corn growth and causes lodging, active remedial measures should be taken. If lodging occurs after the jointing, cultivators should cultivate the soil and allow the corn to recover. When the corn is lodging after tasseling, it should be manually lifted and earthed in time to reduce losses.
Prevent pests. Strengthen the prevention and treatment of corn pests and diseases, corn, small spot, corn borer, we must promptly prevent and control.
Appropriate late harvest. Without affecting double cropping, the harvest period can be appropriately postponed, increasing corn kernel weight and increasing yield. When the corn glutinous rice leaves are dry and loose, and the grain becomes hard and shiny and golden yellow, it is the ripening period of corn, and the harvesting yield is the highest at this time.
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