What medicine does grapefruit protect flowers and fruits?

In order to protect the flower and fruit of grapefruit, hit four high or amino acid + high phosphorus + boron at the bud stage (5-7 days before flowering). When the flower fades 2/3, hit four high or amino acid + high phosphorus + boron + gibberellin + brassine. In addition to medication, reasonable fertilization is also one of the keys to help protect flowers and fruits. Here are the fertilization techniques for sleeves during the flowering and fruiting period as follows:

Fertilization skills of pomelo

1. Flower-promoting fertilizer

In order to promote flowers, strong trees can be sprayed with 0.3-0.6% potassium dihydrogen phosphate 2-3 times during flower bud differentiation (December), and weak trees can be sprayed 0.2% potassium dihydrogen phosphate plus 0.4-0.5% urea 3-4 times. A large amount of organic manure, green manure, phosphorus and potash fertilizer should also be added to lay the upper layer of the ground to promote the good development of horizontal roots and facilitate early fruit and high yield.

two。 Budding fertilizer (flower bud fertilizer)

From February to March, the main available nitrogen fertilizers were applied, such as human feces and urine or urea, ammonium sulfate and other fertilizers.

3. Stable fruit fertilizer

Half a month before the second physiological fruit drop (June), quick-acting nitrogen fertilizer and phosphate fertilizer should be applied, or human feces and urine should be applied and 1% superphosphate leaching solution should be sprayed. This can compensate for the nutrients consumed by flowering and the nutrients needed by young fruits, reduce fruit drop, improve fruit setting rate, and ensure high yield.

4. Other

The water soluble fertilizer of flower and fruit protection can also be applied, which can reduce flower and fruit drop, increase the fruit setting rate of grapefruit, improve the stress resistance of young fruit of pomelo, prevent the nutrient dispute between flowering and fruit setting of pomelo, and make grapefruit expand fruit better.

If the grapefruit tree has a serious phenomenon of falling flowers and fruits, the necessary chemical spraying is indispensable. In general, if you do a good job in fertilization management, it is unlikely that there will be fat and unnatural falling flowers and fruits, so growers must grasp the fertilization of grapefruit trees.