When will the green wheat in Shandong be watered?

The average temperature in spring is above 3 degrees. Do it.

After the end of March, the temperature began to warm up. As the temperature rises, winter wheat will spring and soon enter the green period. The main condition affecting the greening of winter wheat is temperature. After inhibition, it is beneficial to keep water, fertilizer and heat, prevent freezing and protect seedlings, control the top and promote the bottom, so that the wheat root system is solid and the wheat seedlings grow healthily. Watering green water depends on the different soil moisture.

For wheat fields with late sowing date before winter, no winter irrigation, poor quality of cultivated land, serious water loss in the field, poor individual development of wheat, small population and serious drought, it is necessary to water them in time. According to the weather situation, if the weather forecast is that the temperature is high, it will be sunny in a week or so, and the average daily temperature is 3℃, you can water the green water. Conducive to winter wheat turning green and growing strong seedlings.

"turning green" means that more than half of the heart leaves of wheat seedlings (one in spring) turn green when they reach 1 ~ 2 cm. It takes about a month from turning green to getting up, which belongs to the last period of seedling stage and is called "turning green period of wheat". The growth in this period is mainly rooting, long leaves and tillering. The turning green period of wheat is also the key period to promote the upgrading of weak seedlings in the later period, control the excessive growth of strong seedlings, adjust the population size and determine the panicle rate.

References:

Wheat turns green-Baidu Encyclopedia