Method and Techniques for Applying Fertilizer to Leaves

Spraying period and dosage 1. Nitrogen fertilizer should generally be used in the early and late growth period of fruit trees, with phosphorus and potassium fertilizers. The pre-use concentration of urea 0.2% ~ 0.3%, the later use of the concentration of 0.3% ~ 0.5%; pre-consumption of human urine use 0.5% concentration, the latter use the concentration of 10%. 2. Phosphate fertilizer spraying should be mastered in the early period, the principle of more in the late. The best effect is ammonium phosphate, the concentration is 0.5%-1%; the concentration of potassium dihydrogen phosphate is 0.2%-0.5%; the concentration of the superphosphate is 1%-3%. 3. Potassium fertilizer is mostly used in the middle and later stages. Potassium sulfate and potassium nitrate use concentrations of 0.3% to 0.5%; grass ash to 5 to 15 kg of water 0.5 kg, soaked for 24 hours, filtered slag can be sprayed. 4. Trace elements. Leaves chlorosis, yellow-white, in the growth phase can be sprayed once every half month 0.3% ~ 0.5% ferrous sulfate solution. Found that the fruit shrinkage deformity, the appearance of dry spots, can be sprayed in the next year before and after flowering 0.3% to 0.5% borax.

Spraying time is best when spraying on a semi-cloudless day. The time should be before 10 o'clock in the morning and after 4 o'clock in the afternoon. Spraying nitrogen fertilizer at full flowering stage can increase fruit setting rate; nitrogen fertilizer application at young fruit stage can promote fruit enlargement; spraying nitrogen fertilizer in May and June, combined with phosphate fertilizer can effectively promote flower bud differentiation; spraying phosphorus and potassium fertilizer at later stage can increase fruit sugar content and promote coloration; Trace elements can be sprayed before and after flowering.

Spraying method The spraying of leaves can be carried out alone, or several kinds of fertilizers can be sprayed or mixed with pesticides to save manpower. However, mixed spray should pay attention to fertilizer or pesticides can not produce fertilizer or injury. Urea is a neutral fertilizer that can be mixed with a variety of pesticides. Before fertilizers and pesticides are mixed, put a small amount of each solution into the same container. If no turbidity, sedimentation, or bubbles occur, it means that they can be mixed. Otherwise, they cannot be mixed.

The effective period of foliar spraying is generally only 12 to 15 days, and it needs to be continued for 2 to 3 times or more. Long-term spraying will affect root growth and weaken the physiological function of the root system. Therefore, the foliar spray fertilizer should be used as a basis for fertilizing the soil. A supplemental measure to quickly replenish nutrition is applied.

Half Shell Mussel

Half Shell Mussel,Frozen Cooked Half Shell Mussel,Seafood Frozen Half Shell Mussel,Frozen Half Shell Mussel

Shengsi Huali Aquatic Products Co.,Ltd , https://www.mytilus-edulis.com