The drying field should generally be carried out at the end of the tillering and at the beginning of the jointing. Premature, affecting the production and growth of effective tillers, too late, new tillers grow too fast, delay the differentiation rate of young panicles. For medium-sized splitting, the water should be drained when the number of holes reaches 25 to 30.
The growth of stems and leaves of rice plants is too strong, the amount of nitrogen fertilizer is too much, and the leaves should be heavy and should be re-emerged in the field. On the contrary, the growth of rice plants should be late, light or not. The soil layer is deep and fertile, and the rice plants appear to be long, and the leaves are black and should be exposed to the sun and heavy sun. The soil is thin, and the fertilizer and water retention should be late and light. If the clay layer has weak water permeability, it should be exposed to the sun and exposed to the sun;
When about 1/3 of the plants in the field have been jointed, the field should be stopped and normal water management should be carried out to ensure the water demand in the panicle differentiation stage and promote the differentiation and growth of young ears. At this time, appropriate deep irrigation should be carried out to control the water layer at 5-6 cm.
The drying time is generally 5 to 10 days. Lightly drying the field, to reach the surface of the field to open the slit, the human foot does not stick to the mud; the field in the sun, the chicken claw-like cracks appear on the surface of the field; the field of heavy sun, to reach the white root exposed, the leaf color fades, The blade is straight and ready.
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