How to apply boron fertilizer to cotton

When the soil effective boron content is less than 0.8 mg, the application of boron fertilizer has a significant yield increase effect. When the soil is deficient in boron, the effect of applying the base fertilizer is the best, and the effect of multiple application is better than that of.......

The main role of the wireless controller

[ Huaqiang Security Network News ]

Through the above description, we have briefly understood the role and characteristics of some wireless controllers. This article will explain the role of the wireless controller in detail, .......

How to select multi-stage fire pump?

Multi-stage fire pump uses a wide range of widely used in environmental protection, water treatment, fire and other industries. Multi-level fire pump safe, leak-proof, corrosion-resistant. Choose a cost-effective multi-stage fire pump products can not only improve product efficiency, but also .......

Beware of the early convulsions of spring celery

Choose varieties that are more resistant to cold, early in winter, late in twitching, strong in growth, good in quality, suitable for spring sowing: such as big leaf celery, Jinnan real celery, milky white celery, glass crisp, Italian celery. Generally, Chinese celery is twitched e.......