When is the watering time for fruit trees in spring? when is it more scientific?

After the beginning of spring, the fruit trees were watered with fertilization before sprouting, and then watered for a long time, which is the critical period of water demand. In actual production, whether fruit trees need to be watered is generally determined according to soil moisture and drought. During this period, the suitable water holding capacity of orchard soil is 60%, 80%. During watering, the water should be infiltrated into the soil 30-50 cm, and should not be flooded, so as not to cause new growth and affect flower bud differentiation.

First, the watering time of fruit trees at the beginning of spring

The main results are as follows: 1. After the beginning of spring, fruit trees can be watered with fertilization before budding. The precipitation in this period is relatively less, which is beneficial to the absorption and utilization of fertilizer, promote germination, flowering and fruiting, and reduce the harm of late frost.

2. Then there is long-term watering at a new speed, which is the critical period of water demand. Generally speaking, in actual production, whether fruit trees need to be watered is mainly determined by soil moisture and drought. During this period, the appropriate water holding capacity of orchard soil is 60% and 80%.

3. The intuitive judgment method is that the 20cm deep soil can reach the hand-held mass, and the landing can be scattered as the standard, which can generally maintain such humidity, indicating that the soil moisture is better, so there is no need to water at this time. When watering, the water should be infiltrated into the soil 30-50cm, and should not be flooded, so as to avoid causing new growth and affecting flower bud differentiation.

2. Watering methods for fruit trees

1. Tree plate watering: build soil ridges around the tree plate to facilitate intraplate watering, this way of water is more economical, but it is easy to cause intraplate hardening, and it is easy to lower the temperature in early spring, so it is necessary to loosen the soil in time after watering.

2. Regional watering: several trees are divided into a community, so that the watering area is large, the root absorption is relatively uniform, and it is suitable for orchards with sufficient water resources and flat terrain.

3. Ditch watering: in places where the source of water is more difficult, we can generally adopt the method of ring-opening ditches, square ditches and straight ditches on the outside of the tree crown, first open the ditch and then water it, watering and fertilizing should be in the same position, so that the amount of water is relatively large, and there are many draught roots. The effect is better.

Third, the time for fruit trees to apply pesticides

1. Before flowering

The main results are as follows: (1) it is beneficial to increase the fruit setting rate, increase the yield of fruit trees and reduce the fruit drop rate by injecting appropriate amount of fruit protectants before flowering. Growth regulators can be used to promote the growth of fruit, mainly naphthylacetic acid and gibberellin.

(2) the concentration should not be too high, in addition to the use of growth regulators, but also to supplement an appropriate amount of trace elements, the main of which is boron, which is helpful to promote pollen germination, help fruit trees to complete fertilization, and can be mixed with sugar during the period.

2. After falling flowers

The main results are as follows: (1) within 7-10 days after flower withering, one dose of medicine to prevent diseases and insect pests is helpful to reduce the incidence of diseases and insect pests, and the specific types of drugs should be determined according to the types of fruit trees.

(2) there is a wide range of options, such as stone-sulfur mixture, the control effect is better, and the price is more affordable.

3. Fruit expansion period

Generally, in the period of fruit expansion, Zhuangguotiling can be sprayed once, which can help to thicken the pedicel, increase the amount of nutrition transport, avoid abnormal fruit and reduce the phenomenon of fruit drop.