Corn remedies after suffering locust

August 05, 2019

Maize is a crop that requires large amounts of water and is not tolerant. According to observations, when the soil moisture exceeds 80% of the field water capacity, the growth and development of the plant is affected, especially in the seedling stage, and the performance is more obvious; in the late stage of corn growth, the rhizosphere often suffers from hypoxia under high temperature and rain conditions. The suffocation and necrosis cause the rapid decline of viability, and the plants are immature and have a great impact on the yield. According to statistics, there is a general accumulation of water for 1 to 2 days before and after tasseling, and the impact on yield is not obvious. The accumulated water yield is reduced by 20% for 3 days and the accumulated water yield is reduced by 40% for 5 days. Based on the experience of various regions, the following management measures can be taken for maize that has been affected by disasters:
1, timely drainage. Once water is found in the fields, deep trenches can be diverted into the fields as soon as possible to reduce the soil and air humidity in the fields and promote plant growth.
2, cultivator, earth. When it is able to land, timely cultivating tillage soil and soil, in order to remove the compaction, improve soil permeability, so that the plant roots as soon as possible to restore normal physiological activities.
3. Increase available nitrogen fertilizer. The glutinous corn is often expressed as yellow-leaf stalk red, and the growth and development are stagnant; increasing the available nitrogen fertilizer can improve the nitrogen nutrition of the plant, accelerate the growth of the plant, and reduce the loss of the locust.
4, to promote premature. After the locust plague occurred, the growth and development of the plants was inhibited, and the maturity period was postponed and artificial ripening must be performed. The commonly used ripening methods in production are: 1 fertilization method. During the silking stage of corn, 10 kg of ammonium nitrate was used for chasing, or 0.2% to 0.3% of potassium dihydrogen phosphate solution (or 3% of superphosphate calcium leaching solution) was sprayed on the leaves. If the silking period has been postponed, it can be used to remove the nutrients, increase the leaf temperature, and accelerate the growth process. In the late corn filling stage, when the grains reach normal size, the loquat leaves are peeled off to expose the grains and promote dehydration, drying and ripening; 8 drying method. If the wheat sowing period has expired, but the corn is still not fully mature, the corn can be chopped down, yard at the edge of the field or other free space (be careful not to pile heaps), until the leaves dry and then remove the ears and dry threshing. In addition, during the corn filling period, hoe (or plough) is used to pound (or plow) on both sides of the ridge; or in the milk ripening period, the long-805 oil booster is sprayed with 500 times of liquid, and it has also been promoted. effect. (Wang Yutang)
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