What is the principle of weeding in landscaping?

1. The purity of target grass species in pure lawn (including tiled lawn) is above 90%.

2. The purity of grass species crawling on miscellaneous lawns reaches 90%.

3. Other green spaces are basically free of weeds.

Weeding skills

(1) Early removal efficiency is low.

There are many kinds of weeds with wide adaptability and strong reproductive ability. Therefore, weeding should adhere to the principle of "early weeding and less weeding", and weeding should be done before the weeds bloom and bear fruit. At the peak of weed growth, if weeds can't be removed together with heads and roots in a short time, the overground part (called "weeding tail") can be removed first.

Then remove the underground part; For weeds on the lawn, we can combine lawn pruning, first cut off the aboveground parts, and then uproot them after the weeds germinate again. The above practices can effectively prevent weeds from blooming and fruiting, and prevent weeds from spreading in large numbers, thus greatly reducing the weeding workload.

(2) Be diligent in clearing weeds.

For weeds growing in dense bushes, it is difficult to find their base areas in the process of cleaning, and even remove the roots together. In this case, the only feasible way is to remove the weeds once they are found in the grass. This is repeated many times, so that weeds can not use leaves for photosynthesis to make carbohydrates; When the root system has no nutrients for a long time, weeds will naturally die with the root.

(3) Winter is a good time to weed.

Weeds grow slowly or even dormant in winter, and the workload of landscaping and maintenance in winter is relatively small. For the green land with more weeds in winter, we should seize the opportunity to clean up weeds in order to reduce the workload of weeding in the next spring.

There are few weeds on the ground.

Covering the surface of green space with a layer of broken branches (made by crushing and retting pruned branches), dead leaves, grass clippings or bark can effectively prevent the growth of weeds.

(five) the creeping weeds are not cleaned up.

Weeds growing close to the ground (such as broken copper coins and three-point gold) are often associated with lawns such as grass and oil grass in Taiwan Province Province. The stolons of these weeds always grow close to the ground, and their leaves are small and dense, evergreen all year round, with good covering effect and no impact on the landscape, so it is not necessary to clean up these weeds.

(6) Only creeping grass species are reserved for miscellaneous lawns.

Miscellaneous lawn is a common type of green space. In order to clean up tall grass, Bermuda grass and other broad-leaved grass on the miscellaneous lawn, only creeping grass seeds can be kept to keep the lawn surface smooth and beautiful.

(7) The chemical weeding effect is good.

In recent years, with the increasing shortage of labor, the cost of employing people is increasing. In order to improve efficiency and save cost, chemical weeding technology is more and more widely used in landscaping maintenance, and the effect is getting better and better. However, due to the wide variety of herbicides and various formulations, the control targets are different. If used improperly, it will cause serious harm to garden plants. Therefore, when using herbicides, small-scale experiments should be carried out first, and then large-scale popularization and use should be carried out after success.