What should I pay attention to in case of continuous rainy weather at the heading stage of rice?

In case of continuous rainy weather at heading stage, attention should be paid to rice ear neck blast.

Rice ear neck blast is a kind of rice blast, which occurs at the ear neck of rice. Ear neck plague forms brown spots in the early stage, which turns the ear neck brown after expansion, and also causes withered white ears. Late development leads to valley. The damage of branches or panicle axes leads to the failure of spikelets.

Extended data:

Heading date of rice:

Heading is the fully developed ear of cereal crops (rice, wheat, corn, etc.). ) protrudes from the top leaf with the elongation of the stem. This is the key period to determine the number of grains set in crops, and it is very sensitive to external conditions.

Heading date marks the transition of crops from vegetative growth (growth of roots, stems and leaves) to reproductive growth (flowering and fruiting). In other words, vegetative growth and reproductive growth are in full swing.

This is the most important critical period to determine crop yield, and it is also the period when crops grow fastest and have the greatest demand for nutrients, water, temperature and light. Therefore, now is the best time for topdressing.

Baidu Encyclopedia-Rice Ear Neck Blast

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