The lack of calcium in grapes will cause reverse curling of leaves, dark green new leaves, serious increase of fruit cracking rate, aggravation of physiological diseases such as grape fruit shrinking, fruit hardness decline, poor storage, so in the grape growing process to add calcium in time Su. The absorption of calcium in grapes peaks in 1-3 weeks, plus the recent rainy weather in Chongqing, grape calcium supplementation should be combined with spraying and soil application. The application of calcium fertilizer should be carried out in the young fruit expansion period, ie 1 week after flowering to the hard nucleus stage, 2-3 consecutive uses, 7-10 days apart, calcium fertilizer requires water-soluble, high concentration, easy to absorb, such as chelated calcium. Type, when spraying, choose no wind or little wind weather, fine spray to the back of the blade, focus on the young part of the inflorescence, ear. In order to improve the hardness and commercial quality of the fruit, calcium fertilizer should be sprayed for 10 to 15 days before harvesting. Soil application of lime not only can also be disinfected calcium, generally in the winter when the clear garden application, after the grape flower can be applied again. Sprinkle the lime cover between the rows of grapes and plow it. Use 50 kilograms of mu. Mouth Pieces,Disposable Mouth Pieces,Medical Mouth Pieces,Disposable Cardboard Mouthpieces Hengshui Qifei Paper Products Co. LTD , https://www.hengshuiqifei.com