Although the precipitation process occurred in the early stage, the drought in the middle and lower reaches of the Yangtze River continued in China, and the crops were seriously affected. The early rice tiller was slow and the young panicle differentiation was affected. In the first season, the paddy field was insufficient for tillage, and the dry crops were weak, making it difficult for cotton. Transplanting, etc. According to the Central Meteorological Observatory, from 25 to 27, there was no significant precipitation in the meteorological arid regions of the middle and lower reaches of the Yangtze River and southern China. Therefore, the drought may continue or develop further, and the adverse impact on agricultural production will be more serious.
From May 21 to 23, a large-scale rainfall process occurred in the middle and lower reaches of the Yangtze River. The soil moisture in the farmland was significantly improved, and the drought in some areas was moderated. However, the increase in water storage in Kutang was not obvious, and the agricultural water in the areas with less precipitation was still insufficient. In the next three days, there is no obvious precipitation in the middle and lower reaches of the Yangtze River and South China. Therefore, the experts of agrochemicals make the following suggestions:
1. The Jianghuai and Jianghan first-season rice areas should continue to actively carry out water storage and water conservation work to ensure timely transplanting of rice in a season; transplanted areas should be followed by application of seedling fertilizer and cultivation of strong and sturdy; Planting late-maturing varieties to ensure planting area.
2. The shallow water layer should be paid attention to in the early rice fields in the south of the Yangtze River. When the number of tillers reaches 75% to 80% of the effective number of spikes of the target yield, the field should be controlled according to local conditions, control of ineffective tillering, and prevention of pests and diseases.
3, cotton, corn and other dryland crops should seize the favorable moisture after the precipitation, timely transplant, timely fertilization, and promote normal growth.
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