The ears of rice are full, should they be dried?

The degree and method of airing the field depends on the soil, fertilization and rice growth. We should adjust measures to local conditions, be flexible and timely. The key is "five aspects":

(1) Seedlings are dried in the field, which is suitable for paddy fields with sufficient stems, thick leaves and vigorous growth. It should be broadcast early and then. For paddy fields with insufficient stems and not too thick green leaves, it is necessary to bask in the sun late and lightly. Generally, seedlings grow, and rice fields with insufficient stems and not too thick green leaves should be lightly aired or not.

(2) For dry land, it should be placed in fertile fields, low-lying areas and cold places, otherwise it should be placed in thin fields and high pits. The heavy alkali field can be slightly dried or not. Paddy fields with strong soil leakage ability use intermittent irrigation, and generally do not need field ventilation. When straw is returned to the field and a large amount of organic fertilizer is applied, the rice fields with strong reducibility should be dried.

(3) The weather is clear, the temperature is high, and the evaporation and transpiration are large. Drying time should be short. If it is rainy, it should be a long time. Ventilation field needs rapid drainage irrigation, which can not only be fully ventilated, but also be irrigated in time. However, it should be noted that in the process of drying in the field, in case of continuous rainfall, the drainage should be dredged in time, and the rainwater should be discharged in time without water accumulation. When rehydrating after drying, deep irrigation and continuous flooding are not suitable. Intermittent irrigation should be adopted to gradually establish the water layer.

(4) Look at the fertility of the field. For rice fields with excessive fertilization and vigorous growth, it is necessary to ventilate them in time.

(5) according to the water source, dry land. In July and August, mud fields with low terrain, high groundwater level, poor drainage and bubbling must be dried.

Matters needing attention in Honda management after rice heading

1。 Due to uneven distribution of fertilizer and excessive nitrogen application in the early stage, denitrification was caused after full heading, and the yield of the last four leaves was reduced due to premature aging.

2。 The total amount of fertilization is large, the plants are super high, and the fields are not in place after heading, which leads to lodging or rice blast.

3。 Long-term deep-water irrigation, saturated irrigation after heading, no dry farming opportunities in the field, poor soil permeability, lack of oxygen, weak roots, premature aging of plants and reduced yield.

4。 Early pumping, insufficient water during filling stage, reducing 1000-grain weight and yield.