The sweet potato varieties used in good varieties need not only high yield, good quality, but also early maturing, and it is best to use medium and short vine varieties to facilitate field management and mechanized cultivation. To use detoxified seedlings.

Although sweet potatoes a…

1. Pruning: According to the survey, pruning once in the second generation of cotton bollworm at the right time will reduce the number of eggs per 100 eggs by 40%-60%. In the second-generation cotton bollworm eradication cotton field, field eggs, insects inventory decreased by 38% -54.5%, …

There are many kinds of nitrogen fertilizers, which are roughly divided into four types: ammonium, nitrate, amide and long-acting nitrogen fertilizers.

Application Technique Key Song

Ammonium nitrogen fertilizer

Ammonium nitrogen fertilizer is more commonly used, the…

The most direct and simple way to save fertilizer is to apply deep fertilizer. Taking urea as an example, the utilization rate can reach 47%-50% after deep application, and the utilization rate after only 25% is applied. Obviously, deep application can significantly increase fertilizer uti…