Planting ginger deep ditch shallow cover yield high

Ginger sprouts slowly and takes a long time to emerge. During the spring months of April and May, when temperatures are still relatively low, farmers often use furrows to help promote germination. Ginger seeds are typically sown in these furrows. However, traditional furrow methods tend to be too shallow, which can hinder proper soil development and limit the expansion of the ginger rhizome. To address this issue, a new method has been introduced—digging both deep and shallow furrows—to overcome these limitations and ultimately increase ginger yield. The specific approach involves preparing composted soil and fertilizers before planting. After deep ridging, the furrow depth is increased to 25–30 cm, which is 10 cm deeper than the conventional method. Fertilizer is concentrated in the furrow before sowing, with half of the total base fertilizer applied directly into the trench. A higher amount of organic bio-fertilizer is recommended. For example, 200 kg of "Dingtai" brand prickly berry organic fertilizer combined with 20 kg of compound fertilizer can be placed at the bottom of the trench. The soil and fertilizer should be thoroughly mixed before pouring water into the trench one hour prior to sowing. The water should be sufficient but not so much that it seeps through the ridge surface, as this could interfere with the smooth emergence of the seedlings. Once the seeds are sown, the soil is covered using a two-tooth hook, placing the ginger near the bottom of the furrow. The furrow is then flattened, and the covering soil should not be too thick—around 4 cm is ideal. Too much soil can lower the temperature and delay germination. After sowing, a 1.2-meter-wide plastic film is stretched over the ridges on both sides of the furrow, and soil is used to secure the edges. This keeps the distance between the bottom of the furrow and the film at about 20 cm, helping to raise the temperature and support better germination. When the seedlings start to emerge and touch the mulch, small holes are made to allow them to grow through. Once most of the seedlings have developed, the mulch is removed, and the first layer of earth is applied, about 4–5 cm thick. Subsequent earthing-up operations are carried out based on the growth of the ginger shoots, ensuring that the rhizomes remain covered to avoid sun exposure, which could negatively affect their development. This improved technique not only enhances the growth environment for ginger but also increases overall productivity and quality. (Dong Kefeng)

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