[ Agricultural Products Network] How to deal with the continuous drought of corn fields, drought has no effect on the yield of corn , how to solve the drought in corn? Below we take a series of questions and explain in detail:
Effect of drought on corn yield
In the case of continuous drought, there are many aspects to the impact of corn. The consequences of drought in different periods will also be different, such as:
1. The effect of drought on the growth period: the drought in the corn seedling stage will inhibit the growth rate of the corn, which will significantly delay the development period, while in the jointing stage, it will promote the early maturity of the corn, resulting in a significant shortening of the developmental stage.
2. The effect of drought on plant height: Drought significantly inhibited the plant height of maize.
3. The effect of drought on corn leaves: drought will cause the leaves to dry and the area of ​​green leaves for photosynthesis will decrease.
4, the impact of drought on the characteristics of the ear: drought will make the ear length of the corn fruit shorter, the number of fruit is reduced, and ultimately lead to reduced corn production.
5, the corn trumpet period is dry, the ear development is slow, the formation of the semi-cut panicle, the upper part of the ear is degraded; in severe cases, the development of the ear is blocked, abortion, the formation of empty ear plants.
6. Drought in the early stage of tasseling, the stamens are delayed, resulting in poor pollination and the formation of flower seeds.
7. If you encounter dry and hot weather during the pollination period, especially the high temperature weather above 35 °C, the pollen vitality will decrease, affecting pollination, and forming a thin rod or an empty rod. The appearance of the filaments constantly stretches out the leaves to form a long beard. Corn that has been in arid or semi-arid state has short stature, slow growth or stop growing, wrinkled leaves, yellowing, and even death. If the drought is relieved, the plants will resume growth and will be in love with each other. A number of small ineffective ears are formed in the upper and lower nodes of the ear, and the corn borer is easily attracted to the stems and tender ears.
8. When the corn in the grain filling stage is suffering from drought, the grain is not full, the ear stick is soft, and the grain on the cob is arranged from large to small ladder.
How to deal with the drought? Some people say that in addition to irrigation watering, is there any good way? Indeed, we have no good way to drought, and we can't prevent it in advance. Unlike pests and diseases, after the occurrence, we can fight drugs. However, the following four points are recommended:
1. Choose drought-resistant varieties.
2, irrigation and watering: irrigation conditions, watering as soon as possible, machine wells, riverside, etc., if there is no irrigation conditions, can not find the source of water, see the following 2 points.
3, water spray outside the root (fertilizer): If it can not be irrigated for a while, artificial spray can be carried out, mainly for the spraying of corn roots, and potassium dihydrogen phosphate, superphosphate, urea can be added during spraying. One is to let the plants absorb the water, and the second is to absorb the nutrients needed for growth.
4, artificial assisted pollination: continuous drought, the impact on corn pollination is very large, then you can use artificial aided pollination, can use bamboo shovel powder or powder coating method, increase pollination opportunities, increase corn yield.