Cucumber is fertile but not fat, and has a lot of nutrient requirements. The roots of cucumber are weak, the roots are shallow, the cork is early, the regeneration is poor, the absorption of soil nutrients is weak, and the soil solution environment can not be tolerated. Otherwise, it is easy to burn roots, burn seedlings, cucumber seedlings have the weakest fertility, and are very sensitive to the concentration of fertilizers, and must be applied lightly.
Cucumber has the characteristic of selective absorption. It is similar to nitrate nitrogen. When only ammonium nitrogen is supplied, the leaf color becomes thicker, the leaves become smaller, and the growth is slow. Cucumber had the highest nitrogen uptake 30 days after planting, with the most uptake of leaves. After 50 days of planting, the leaves and fruits absorbed approximately the same nutrients, and most of the nutrients were absorbed by the fruit for 70 days.
The production of 1000 kg of cucumber requires about 2.5 kg of nitrogen, 1 kg of phosphorus and 4 kg of potassium.
Before planting, the farmer's fertilizer is 4000 kg (or commercial organic fertilizer 1500 kg) and ternary compound fertilizer 50 kg is used as the base fertilizer. When the cucumber enters the early stage of the melon, the first top dressing is carried out. Afterwards, the growth and harvesting conditions are followed by the fertilizer every 7 days to 10 days, and the ternary compound fertilizer or nitrogen fertilizer of 5 kg is gradually increased to 15 kg.
The seed dressing can be applied by foliar fertilizer, and the liquid fertilizer can be used for rooting treatment in the growing season.
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Advertisement lighting is a special lighting solution used to highlight and illuminate advertising media such as billboards, light boxes, signboards, in order to attract people's attention and effectively convey advertising information.

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In advertising display lights, lighting layout is very important. Generally, according to the shape and size of the advertising media, as well as the importance and key points of the advertising content, the design of a suitable lighting scheme. Through the distribution and angle setting of the lamps, it can ensure that the entire advertisement is evenly illuminated, avoiding dark or over-exposed areas, so as to improve the visibility and recognition of the advertisement.

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Advertising sign lighting is widely used in commercial environments, including shopping malls, shops, roads, subway stations and so on. It can not only attract the attention of consumers, increase brand exposure and sales opportunities, but also create a unique urban landscape at night to enhance the beauty and vitality of the city.

All in all, advertising lighting is a lighting solution specifically designed to highlight and illuminate advertising media. Through LED technology and well-designed lighting schemes, it can improve the visibility and recognition of advertisements, attract people's attention, and effectively convey advertising messages.

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