Strengthening the management of rice seedlings, preventing leggy seedlings and improving the quality of seedlings are the key to the high yield of rice. However, there are mainly the following reasons for the legged rice seedlings:
First, the seedlings are ventilated lately and the ventilation is insufficient
The ventilation of normal seedlings should be a small breeze after emergence, and the air volume should be gradually increased as the age becomes larger or the temperature increases. Before the emergence of the shed outside the sunny temperature exceeds 20 degrees, it should also be ventilated. Ventilation on seedbed ventilation should be done on ventilation. Before seedlings are 2.5 leaves, the temperature of the shed is controlled below 30 degrees. After 2.5 leaves are controlled below 25 degrees, there should be 3-5 days of large seedlings before transplanting. However, more than 90% of rural households have now started to ventilate when they have 1 leaf 1 heart or 2 leaf 1 heart. This leads to long seedlings, long internodes, reduced seedling quality, and reduced or lost low-node delivery.
Second, the seedling watering
Rice seedlings are mainly rooted, long rooted, and long wet leaves, controlling the number of waterings. Before the sun comes out, look at the tip of the seedlings without watering the dewdrops. Sprinkle it once and drench it. It is best to pour in the morning. Nowadays, rice farmers are generally waterlogged, poorly watered, and are used to watering in the evening. This can lead to leggy seedlings and poor root development.
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