Methods and precautions for watering wheat with urine

Collecting urine in winter to water wheat is a traditional measure for increasing yields. According to measurements, human urine generally contains 0.5% nitrogen, 0.13% phosphorus, 0.19% potassium, and 3% organic matter. Therefore, after wheat is watered with urine, the content of readily available nutrients such as nitrogen, phosphorus, and potassium in the soil can be significantly increased, promoting the growth and development of wheat seedlings. Many years of production practice have proven that applying 250-500 kg of fresh urine per mu in winter can generally increase wheat yield by 25-50 kg, with a very obvious effect.

The specific time for watering wheat with urine generally starts from “Start of Winter” and ends at “Pure Brightness”, but the period from after the soil freezes to before it thaws is best. Before the soil freezes, it can be applied at any time during the day, but it must be diluted with an equal amount of clean water to prevent seedling burn; during the freezing period, it should be applied at noon or in the afternoon when the weather is clear and warm and the soil is thawing, without dilution with water, and can be applied directly.

There are many methods for watering wheat with urine. It is best to apply it with a seed drill or in furrows, and cover the soil immediately after application; if it is splashed on, loosen the soil by hoeing promptly after application to break up surface crusting, so as to help preserve fertilizer and soil moisture. For the application amount, generally 500-750 kg per mu, with a maximum of no more than 1000 kg. Applying too much can easily burn seedlings in plots with poor soil moisture. When watering wheat with urine in winter, first, note that wheat fields covered with snow must not be watered. This is because after urine is applied, the snow melts and the ground temperature suddenly drops, making wheat seedlings prone to freezing; second, saline-alkali wheat fields must not be watered. This is because human urine contains salt, and applying it to wheat fields increases the soil salt content, which is unfavorable for wheat seedling growth.