What happened to the stem section above the corn ear? What about corn stems at the booting stage? The corn stems are broken down mainly in these three cases, and the corn is inverted, the stems are inverted, the roots are inverted, and the stems are folded. Due to the different lodging conditions, the degree of yield loss is also different. In general, stem-deficient corn is difficult to restore growth and it is not easy to take rescue measures.
1 causes the corn stems to fold
1.1 Under the severe drought conditions in the early stage, after the severe rainstorm in the severe weather, the corn in the trumpet period grows too fast, and the dry matter of the straw is too small, so the lodging resistance is poor.
1.2 Fertilization structure is unreasonable. Excessive nitrogen fertilizer and insufficient potassium fertilizer cause excessive growth of corn in the early stage and poor lodging resistance in the later stage.
1.3 The seed itself has different lodging resistance, resulting in inconsistent resistance to lodging.
2 response measures
2.1 Promote soil testing and formula fertilization, give crops a balanced and balanced nutrition, stabilize nitrogen, reduce phosphorus, increase potassium, promote the application of organic fertilizer, fertilize soil fertility, increase organic matter content, promote crop growth and development, and enhance crop stress resistance. Limit the coordination of corn vegetative growth and reproductive growth. Cultivate strong seedlings and strive for high yield and stable production.
2.2 Fine land preparation, greatly improve the quality of sowing.
2.3 Spray corn plant growth agent to reduce plant height and increase the lodging resistance of corn. In the 8~11 leaves before the tasseling, pay attention to the spraying of plant growth regulator such as corn “Jindule†with chlorinated benzamide and propiconazole. Jindele 40 ml/mu + 20% chlorantraniliprole + 25% propiconazole, spray 1kg of ground with 15kg of water. This can achieve the comprehensive effect of preventing lodging and preventing diseases and diseases.
The above is the reason for the broken corn stalk and the treatment plan brought by Xiaonong.com. Generally speaking, the stem is only the slope of the corn. After the weather improves, the corn will restore its self-reliance and basically does not affect the yield. Root lodging causes the lateral roots of the corn to be pulled up, the angle of stalk tipping is larger, the light intensity is weakened, and the yield is reduced. The serious loss is the stem fold.
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