Avoid spraying weeds in litchi and longan garden

With the development of litchi and longan production, orchard weeding has changed from loosening to spraying herbicides. In most orchards, the author found that spraying weeds did save a lot of work efficiency. Litchi longan fruit tree pests increased, in litchi longan tree damage red spiders, aphids and other pests, resulting in fruit tree weakness, leaf yellowing, disease and insect pests aggravated, light next year's loss, heavy litter. After investigation and observation, the author found that the main reason lies in the blind use of herbicides. The author found in most orchards and adjacent litchi and longan orchards that fruit growers weeded twice or more a year in order to save manpower and material resources. So that the orchard is barren or full of withered leaves. Soil erosion is serious in rainy season, and orchard diseases and insect pests emerge endlessly. Dry season soil nearly hardened, dry water loss. Especially in recent years, litchi longan mites infestation. Litchi longan young fruit trees are not covered very easy to grow weeds, dry weeds in winter, easy to cause fire. In order to save money, most orchards are sprayed with weeds. Spraying weeds mainly in summer and autumn to prevent weeds from growing too much and reduce hidden dangers. However, herbicides should be used scientifically and not blindly. Otherwise, the grass will grow excessively, resulting in uncontrolled diseases and insect pests, soil hardening, soil erosion and other phenomena. The main reason is that it destroys the biological balance and causes beneficial natural enemies to lose their habitat and living environment. Weeding in litchi and longan orchards should be selective and should not be sprayed blindly. Spraying herbicides should pay attention to: one, a year should be sprayed once herbicide, time should be selected in late summer, at this time will grow in the first half of the weed kill, to winter has decayed, the second half of the early autumn rain less, weeds grow slowly, thus effectively controlling weed growth, both effective fire prevention and maintain a certain soil humidity and natural enemies living environment. Second, selective spraying weeding, should not be sprayed in the whole garden, protect seedlings or introduce some thick fleshy ground cover plants that are not easy to cause fire, in addition, such as false peanuts, white flowers and Stylosanthes, etc. can also be used as green manure to improve soil. Third, young fruit trees belong to investment orchards, leguminous plants can be properly selected for interplanting, which will not affect the growth of fruit trees and can be short-term or directly planted as green manure to improve land use efficiency. This is beneficial to the growth of fruit trees, effectively reducing diseases and insect pests, improving soil, maintaining soil erosion, but also effectively saving manpower and material resources and reducing investment. Of course, litchi and longan fruit trees still need to be strengthened management, pay attention to fertilization, cultivation and disease prevention and pest control work.