Under what circumstances poured back to Qingshui
Early or late pouring, according to the situation, temperature, soil, seedlings and top dressing conditions, according to local conditions.
1. Look at lyrics. If the winter is dry and rainless, if it is not good, it will be poured early; if there is more rain and snow in winter and winter, and the sensation is better, you can pour it later. Loam or loess generally has a moisture content of less than 17%, and sandy soil moisture content is less than 15%. It is a lack of earthworms and needs to be poured back to Qingshui. On the contrary, the soil is not lacking, and the return to Qingshui may be postponed.
2. Look at the weather. The main thing is to look at the temperature. If it is cold and the wheat returns to late spring, it should be poured later. If the spring is warm and wheat returns to early morning, it should be poured early. It is generally advisable to water at a stable ground temperature of about 5°C, and it is advisable to water before and after convulsions.
3. Look at soil quality. Sand land, poor water retention, should be poured early; clay land, strong water retention, should be poured late.
4. See the situation. Early morning and evening water should be suitable for seedlings. General wheat seedlings should be poured early, which can promote spring delivery and increase tillering. Wang Miao to late pouring, can control the spring delivery, to prevent the group is too large, resulting in closed canopy of early wheat, causing lodging.
5. Look at the fertilizer situation. If the wheat field needs to recover chemical fertilizers as soon as possible to meet the growing needs of wheat, in order to tie in with the early-stage fertilizers, it will require early watering, which can improve the fertilizer efficiency by “promoting the use of waterâ€.
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