What's wrong with such a big winter jujube?

In the hard core stage of winter jujube, the stone began to harden. At this time, the fruit has been planted for 920 times in the early stage, and the second large-scale concentrated fruit drop will occur due to the decline of the hormone level of the tree and the imbalance between the supply and demand of its own nutrition. The main performance of this period is that jujube fruit wilts, turns yellow and falls off. This time, the fruit drop has a great relationship with the tree potential, and the fruit drop with better tree potential is slightly lighter. Therefore, reasonable fruit hanging and adjusting tree potential are the main measures to alleviate the disease.

Recommended scheme:

1, late July (early shed), 7- 1000- 1500 times +0.004% brassinolide 2000-2500 times or chelated trace element fertilizer (Stokop) 6000 times.

2. Apply 5 kg of neutral and fully water-soluble medium and micro fertilizer and 25 kg of potassium sulfate per mu. Winter jujube orchards with poor roots, weak trees and yellow leaves were washed with 5 liters of EM microbial inoculum +20 kilograms of potassium fulvate +3000 kilograms of water +8000- 1.2000 times of Stokop or applied with a fertilizer gun.

3. The application of 1000 times of amino ester and 4000 times of Stokopp in the color-changing period of white ripening can advance the color-changing by 7- 10 days, promote fruit expansion and effectively prevent fruit cracking.