Calcium deficiency causes insufficient supply of nutrients to tomatoes and produces empty fruit. 1. Apply 50 kg superphosphate per mu when applying basal fertilizer. 2, can now spray Tianda 2116 melon fruit special type 600 times + calcium chloride or calcium nitrate 300 times, 7 days once, even spray 2 or 3 times, you can get better. Mu Chong Shi root like 5 kg + calcium nitrate 10 kg, 2 times, interval 15 to 20 days. In addition, it is estimated that you applied too much ammonium nitrogen fertilizer or chicken manure, inhibited the absorption of calcium fertilizer, nitrogen fertilizer can not be excessive after fertilization. Fingerprint Tripod Turnstile,Full Height Turnstile,Automatic Flap Swing Tripod Turnstile,Full Height Swing Tripod Turnstile Shenzhen BIO Technology Co.,Ltd. , https://www.hfsecuritytech.com