"soil, fertilizer, water and seeds are kept secret", which happened 5 or 6 years ago, but I remember it; Everything grows by the sun, and the rain and dew moisten the seedlings and make them strong, as the old people sang. The land is dry and short of water, and the corn is not moistened by rain and dew, which not only affects the growth and yield, but also dies. On the other hand, waterlogging is not good. There will definitely be some impact. Farmers have a traditional saying, that is, no matter how timely your water conservancy conditions are, when the weather is dry and there is little rain all year round, even if you irrigate it for ten and a half days, the corn will not suffer from drought, and the corn yield will be high. However, it will definitely not exceed the output in a good year.

sowing date: when corn is planted, the yellow sand in the soil can germinate and emerge. Don't say it is too dry, just water it and plant it again! This is a waste, and the second is to delay the growth cycle of corn. The corn will mature in about 1 days, so you have to wait for two or three days to plant it once. The impact of drought on corn is certain, not only in the sowing period of corn, but also in the whole growth process of corn, it is impossible to have drought in any link. Corn, in general climate conditions.

Because only maize varieties with well-developed roots can be "green branches and green leaves, and the living stalks are mature", and the roots can go deep into the soil 1.6 meters or 1.8 meters to absorb water and nutrients. —— For example, in the demonstration field of Mr. Han Zisong in Xiangcheng, Zhoukou City, Henan Province, there was no rain for 6 days during the filling period, and the ten-star drought-resistant corn variety "Eight Strong and Ten" was approved by the state.

In another year, there was no rain after the wheat harvest, and there was no condition for drought resistance, so summer corn could not be planted on time. It didn't rain until May 28th of the lunar calendar, and corn was planted at the beginning of June. This year, when the wheat was planted, the corn was not mature, so farmers planted wheat in time and harvested it prematurely. The corn is dried in the sun, the grains are cleaned, and the corn yield is reduced. Like all crops, the planting of corn needs a lot of water. Without sufficient water supply, the corn will grow slowly, the plants will be short, the leaves will be yellow, the particles will not be full, and there will be "tiger teeth". It is also common that one stick is followed by half a stick.