Zinc is one of the necessary trace elements for the growth and development of vegetables. Cauliflower, beet, spinach, Chinese cabbage, tomato, eggplant, radish, onion and leguminous vegetables are all hi-zinc vegetables. Applying zinc fertilizer can increase yield and improve quality. Appropriate application of zinc fertilizer can play a supporting role in the prevention and treatment of viral diseases, so the use of zinc fertilizer can not be ignored. However, vegetable application of zinc fertilizer should pay attention to "three bogey": The reason why the excessive application of excessive zinc fertilizer is micro-fertilizer is that the crop needs less of it, and the application amount exceeds the general assembly and produces toxic effects on the crop. According to the degree of soil zinc deficiency, when applied as basal fertilizer, 0.5 to 2 kg of zinc sulfate per acre is applied. Generally, 1 to 2 kg of zinc sulfate is used per acre for soil topdressing, and 0.05% to 0.15% of zinc sulfate solution is generally used for foliar spray. Do not use excessive amounts. Second bogey in the base fertilizer in the continuous application of zinc fertilizer as base fertilizer is generally valid for a long period of time, one application, sustainable 1 to 2 years. In addition to severe zinc-deficient soil, it can be applied once a year. However, in actual production, vegetable farmers apply zinc fertilizer at the end of every vegetable planting period. The result is that zinc fertilizer is applied twice in one year, so that the amount of residual zinc in the soil is too large, and the absorption of other elements by the soil is inhibited. Three bogey and alkaline fertilizers, alkaline pesticides mixed with zinc and alkaline fertilizers will react to reduce fertilizer efficiency. Similarly, zinc and alkaline fertilizers combine to reduce zinc's effectiveness and pesticide efficacy. Moreover, if zinc fertilizer is mixed with phosphate fertilizer, it will easily cause zinc phosphate precipitation, which not only reduces the effectiveness of zinc, but also reduces the fertilizer efficiency of phosphorus, so they should not be used at the same time. Starch Empty Capsule,Starch Empty Capsule Shell,Starch Clear Pill Capsules Empty,Starch Hard Empty Capsule Ningbo Jiangnan Capsule Co., Ltd. , https://www.jncapsule.com