The good effect of timely late harvest of corn can improve the quality and increase the yield.

maize yield

Timely and late harvest of corn is an important technical link to increase corn grain weight, increase corn yield, improve corn quality, increase grain yield, increase farmers 'income and increase agricultural efficiency.

1. Late harvest can prolong grain filling time and increase maize yield. Corn only in the case of full maturity, so that the largest seeds, the highest yield. If the harvest is 10 days late, the yield per mu can be increased by more than 50 kg, and the income per mu can be increased by about 100 yuan.

2. Timely late harvest can not only increase the starch content in the grain, but also increase the amino acid and protein content, thus improving the quality of corn.

3. The corn seeds harvested late in time are full and uniform. The number of unpolished seeds decreased obviously, and the moisture content of seeds was low, which made it easier to thresh and preserve.

So how do you determine the best harvest time for corn?

1. Change the habit of harvesting when bracts turn yellow, and strictly grasp the signs of complete maturity of corn, that is, the grain hardens, the grain filling milk line moves to the base of the grain and disappears completely, and the black layer at the base of the grain forms. The kernel presents the inherent color and characteristics of the variety, and the ear and bract become dry and fluffy and white.

2. Postponing harvest for 10 days, changing the habit of harvesting corn 40-45 days after pollination to harvest about 55 days after pollination. Make full use of the climate resources in the growth period of corn, which is good for dry matter accumulation, and prolong the grain filling time of corn as much as possible, so that the grain weight potential of corn can be fully exerted.

3. Accurately grasp the date of complete maturity of corn and actively promote mechanical harvesting. The sowing period of corn in our county is from late May to early June, and the harvest period is generally at the end of September and early October.