Grow lights Shenzhen Huangtai Photoelectric Co.,Ltd. , https://www.ht-led.com Combined with the land preparation, 5000 kg of organic fertilizer is applied per mu, and after the fertilizer is applied, it is turned over twice. After the land is flattened, the ditch is 30 cm deep, and 30 kg of diammonium phosphate or 100-150 kg of cake fertilizer is applied. The loam is mixed and leveled. ã€Comment】 ã€Print this article】 ã€Close this page】 ã€Large, medium and small】