Main characteristics of dead seedlings caused by rice deficiency

During the growth of seedlings after transplanting, sometimes the problem of rice seedlings is stiff. It is manifested that the rice seedlings are slow after the transplanting, and the rice seedlings are not long or slow, and the farmers call them "frozen seedlings". There are many reasons for the formation of dead seedlings. The rice stagnation caused by rice deficiency can be divided into the following three types:

First, the zinc deficiency caused by zinc deficiency in rice is usually caused by zinc deficiency caused by zinc in the 2-4 weeks after transplanting, the incidence rate is higher in about 20 days. The base of the new leaves of rice seedlings is chlorotic and white, and the old leaves are brown patches on both sides of the veins, or irregular brown spots; the tips of the lower leaves are dry, the newly extracted leaves are short and narrow, and the leaves are slow. Regardless of the shackles, the plants are dwarfed, and the farmers call them "retracted seedlings." If the rice fields appear to be stiff, the rice yield will be significantly affected.

Second, the rice deficiency caused by potassium deficiency

The dead seedlings caused by potassium deficiency in rice usually appear after the rice seeds turn green, reaching a peak within 20-30 days after transplanting. The main symptoms are: growth stagnation, short plants, dark green leaves, and less tillers. The lower leaves of the plant gradually appear yellow-brown to auburn spots from the tip of the leaf to the leaf base, and are connected into streaks. In severe cases, the leaves appear to have symptoms of rupture of the leaf margin from the bottom to the top.

Third, rice deficiency caused by phosphorus deficiency

The symptoms of the deficiency of phosphorus deficiency in rice are that the new leaves are dark green, the lower leaves are purple-red, the leaves are small and erect, the leaf sheaths are long and the leaves are short. Rice seedlings have less tillering, less brown roots and no white roots.

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