In the process of storing and transporting biological products such as vaccines and vaccines from the finished warehouse of pharmaceutical factories to the cold chain storage and transportation process for inoculation of relevant populations, the quality of the.......

In winter, seeds and fruits of many crops need to be stored. Although the farmers’ friends have created comfortable and stable storage conditions for these seeds and fruits, there are still 10% to 19% of the crops such as sweet potatoes are engulfed by diseases during storage, and t.......

1, leaf vegetable vegetables avoid application of ammonium nitrate. Leaf vegetables, such as cabbage, Chinese cabbage, leeks, celery, cabbage, etc., can easily absorb nitric acid nitrogen fertilizer during growth. Leafy vegetables If ammonium nitrate is used, leafy vegetables absorb nitrat.......

experimental design

The old vegetable garden soil has been cultivated, coupled with the lack of attention to fertility and conservation of fertility and affected by a variety of adverse conditions, soil fertility gradually decreased, the soil texture is aging, seriously affecting the growth and development of.......

First, modulation

1. Crushing grain and seed Seeds such as rice, wheat, broad beans, corn and other feeds are difficult to be digested and absorbed due to their hard shell and epidermis. This is especially true for poorly digestive goslings. Therefore, it must be crushed or ground .......

In greenhouse vegetable production, the vegetable cultivators hang thermometers in the shed is very casual, some of the thermometers are hung under the vents in the greenhouse or on the back wall, and some of the vegetables are just planted and the thermometers are hung over 1 meter from t.......

Lamination

After the leeks have just been harvested, there is a rich leek odor over the leek field, and it is easy to attract large numbers of adults to spawn. Therefore, after the leek is harvested, the plastic film should be covered with leeks on the surface of the leek immediate.......

The first thing to be sure is that Chen Guoyong's practice of applying organic fertilizers and fungicides before transplanting bananas is correct. It can create a good growing environment for the colonized banana seedlings, but the management afterwards needs to be further improved. Nu.......