What should be done with leaves in a rural orchard? Why?

After the trees have fallen their leaves, most growers will remove the fallen leaves outside the orchard and burn them intensively, with the aim of reducing the occurrence of pests and diseases in the following year. In fact, defoliation is an important part of the material cycle of the orchard ecosystem, which plays an important role in maintaining soil fertility and promoting the nutrient cycle of the ecosystem.

You can't light a fire, you can sweep the leaves under the roots, and when they rot, you can use them as fertilizer, and they won't pollute the environment.

These leaves can be piled up, watered, allowed to rot and ferment, and then buried in the ground as fertilizer and nutrients for the fruit trees, so that they are clean and not wasted.

Shao Huanwu - Causes and countermeasures of a large number of leaves of orange trees in early spring.

Leaves are important organs for making and storing nutrients. If no anti-freezing and warmth measures are taken for citrus in winter, after the beginning of spring, if it is frequently invaded by cold waves or affected by excessive temperature difference, it will cause early spring leaf loss, resulting in weak trees, unfruitful flowers, and low fruit setting rate. Therefore, some effective countermeasures must be taken to grow citrus in the North Rim area.

1 Protect the root group.

The roots of orange trees are very sensitive to the external environment, do not apply too concentrated or unrotted fertilizers, when plowing the orchard soil, do not break the roots too much, and effectively protect the roots from harm so as not to affect the absorption of nutrients.

2 Control moisture.

Before the occurrence of spring buds, it is necessary to properly control the water, so that the soil is in a proper drought state, and keep the soil water content at about 60% 65%, which is not only conducive to the differentiation of flower buds, but also does not cause the leaves to fall off due to water loss. In the drought and flood seasons, attention must be paid to doing a good job in fighting drought and flood prevention in a timely manner.

3 Top fertiliser.

After defoliation, the root system of orange trees has insufficient nutrition, poor vitality and weak ability to absorb fertilizer, so fast-acting fertilizer should be applied frequently and thinly. Before germination from late February to early March, at the flower bud stage in early April, and at the two physiological fruit drop stages in early May and early June, the rotted human manure or nitrogen fertilizer was applied respectively, with an appropriate amount of phosphorus and potassium fertilizer, and the strong fruit fertilizer was reapplied in July. The amount of fertilization should be flexibly controlled according to the age of the tree and applied reasonably.

4 Trim properly.

When pruning orange trees, focus should be on pruning weak branches, long branches and diseased branches, and retain leafy branches and strong branches.

The second and third shoots are forced to make strong spring shoots. Because deciduous trees have few and short spring shoots, a large number of flowers, and a shortage of nutrients, resulting in more flowers and less fruit, the weakened or overly dense fruiting mother branches should be cut off to minimize ineffective flowering. That is, at the germination and budding stage, the weak autumn shoots on the outside of the canopy should be cut off, leaving only the long and thick branches, and the slender perennial side branches inside and below the canopy should be retracted and cut to the strong leafy spring shoots.

In addition, fertilizer and hormones can also be sprayed on the foliar surface before germination, fruit-growing stage, and before autumn shoot extraction, so as to protect leaves and fruits.

Test the soil quality to see if it is a lack of nutrients or heavy metal poisoning.

For the collected fresh leaves, the label and field sampling inspection form should be filled in according to the field number, sample number, sample name, sampling date, location, sampling location, tree robustness, sampler and other information. Fresh leaves can be packed in nylon yarn bags or gauze bags and must be quickly brought back from the field to the lab for immediate disposal. If the reed stuffiness can be processed in time, it can be replaced with a plastic bag and refrigerated in the refrigerator of -5 until washing, which can keep the leaves fresh and the nutrients will not be washed off.