The temperature control in the cultivation of greenhouse fruit trees is not good, and it is easy to cause serious drop and affect the yield. How to prevent greenhouse fruit falling? When the reporter interviewed Zhang Zhicheng, an expert on mixed fruit and senior engineer of forestry at the Northwest A&F University on February 13th, he said that the following measures should be taken to prevent and control the falling of greenhouses:

1. The warming rate of the buckle sheds to the flowering period should be slow after they are warmed up, generally requiring 40 to 50 days from warming to flowering.

2. The maximum flowering temperature should be controlled between 20 and 24 degrees Celsius, and the minimum temperature should be controlled above 7 degrees Celsius; the relative humidity should be controlled at about 50%.

3, do a good job of artificial pollination or flowering bees during the flowering period to ensure pollination is completed within the effective pollination period.

4, after falling to the hard core before the appropriate supply of fertilizer water, hard core should not start after the flood, to avoid a large number of individual nitrogen fertilizer, should be combined with the application of phosphorus and potassium. Mighty trees and saplings cannot be over-pruned, timely trimmed during growth period, control leggy, reasonably sparse the density of new shoots, eliminate excessive shoots, clean the shed film in time, increase the light; reasonably leave fruit to prevent excess fruit , aggravate the competition between the nutrients in the fruits and cause serious fruit drop.

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