The specific reasons why corn does not have kernels are as follows:

1. Insufficient nutrient supply during ear differentiation.

2. The temperature is not suitable. Before and after the heading temperature higher than 35 °C, corn pollen is killed, affecting fertilization, resulting in failure to normal fruit. The temperature at the later stage of grouting maturation is lower than 16°C, which affects the accumulation of dry matter and causes pods.

3. Moisture imbalance. The puffy bell-to-flowering stage is the critical period for corn water demand. During this period, the water shortage is due to drought. People call it the “card neck drought”. "Card neck drought" will lead to slow tassels or dead tassels, resulting in a significant reduction in pollen and male-female imbalance. Drought and no rain before and after tasseling resulted in flowering of tassels and forward or late elongation of the female silking period. The flowering periods of the female and tassel were not encountered.

4. When Yanghua Loose Powder encounters rainy weather, tassels do not bloom normally, and some pollen bulges or breaks into a group and loses vitality, affecting the normal conduct of pollination and fertilization.

5. Planted dense, poor ventilation and light transmission in the field, poor corn growth and development, impaired ear differentiation, resulting in lack of lack of grain.

6. Pest and harm. Corn grain is affected by corn borer, aphids, armyworm and leaf spot, smut, and other diseases and pests, leading to premature aging of functional leaves, and it also increases corn empty grains and severely forms empty spikes.

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Shandong Lewin Medical Equipment Co., Ltd. , https://www.lewinmed.com