Mechanical water-injection drought-resistant seeding uses a water injection device to inject water into the seedbed at a depth of 5 to 10 cm. The water is then covered with back-ground water and sown on the dry soil above the water. When the soil sinks, the water infiltrates and the seed germinates. This method has the characteristics of water saving, labor saving, long working time, good effect and easy operation, and is not limited by soil and topography. It is suitable for all kinds of soils on flat ground, depression, slope and land. There are 4 kinds of commonly used water injectors. 1. Rat water injection device. The water injection device has a water-filling channel that is in the shape of a mouse. The backwater has a small squeeze force on the water, good water storage performance, and slow anti-soaking of the water. It is not easy to “sludge†when planting and fertilizing, especially when the water volume is large. . 2. Spade water injection device. The water injection device has a simple structure and is easy to process. The water injection groove is in a "V" shape. After water injection, the soil backwater has a larger extrusion force, the anti-soaking is faster, the seed bed deformation is small, and the seeding depth and seedbed change are small. 3. Water and fertilizer combined water injection device. During operation, both water and chemical fertilizers fall into the bottom of the ditch where the water injector is opened, which is beneficial to the hydrolysis of chemical fertilizers, makes the chemical fertilizers work earlier, and realizes sow water sowing. 4. Self-made water injection device. The self-made water injection device uses the sowing and opener to open the ditch, and when it has not been backfilled, it will apply water, cover the water by back-ground and then sow and fertilize. It is suitable for small and medium-sized water injection. When the water volume is large, it will be used for red fertilizer. L Phenylalanine,L Phenylalanine Powder,L Phenylalanine Cas 63-91-2,Food Additive Nutrition Supplement CHANGZHOU GUANGHUI FOOD INGREDIENTS CO.,LTD , https://www.gsweetfood.com