Evergreen shrub, about 3 meters high. Branchlets are thinner, glabrous and usually spiny. It blooms in spring and matures in February 10 ~ 10.
Summer is hot and humid, which is the season with the most pests and diseases in citrus. During this period, if the pest control is not effective, it will seriously affect the cultivation of young citrus branches and tips, affect the development of young fruit trees, and even cause a large number of fruit drops. Therefore, it is necessary to strengthen pest control in summer. The occurrence and control methods of main citrus diseases and insect pests in summer are introduced as follows
3 Orchard planning and planting techniques
It is required that the soil layer is deep (60㎝) and fertile; The ph value of the soil is 5.5-7.0; The slope of the orchard is less than 25 degrees. When planning a garden, there should be necessary roads, irrigation and drainage, water storage and ancillary building facilities. In terms of specific planning, we should concentrate on one place as much as possible and build gardens in places with good traffic and water conditions.
time
Generally, it is planted after the autumn bamboo shoots mature in September-165438+10 or before the spring bamboo shoots germinate in February-March.
density
The planting density is 3m× 4m, and 55-60 plants are planted per mu.
Planting technique
Digging planting holes in the soil: pulling wires at regular intervals, digging planting holes with a depth of 80cm and a width of 80cm, then pressing green manure with a depth of 50cm, and backfilling the soil with a height of 40cm for planting; Ridge planting: 8 meters, 60-80㎝ wide and 40-60cm deep, with 2 ridges per grid (width 1.5m, center distance 4m, height 20-30cm). When planting, the roots of seedlings should be trimmed appropriately, placed in the center of the planting hole, stretched and righted, and the seedlings should be gently lifted upward while filling the soil, so that the roots are closely connected with the soil. Water the roots, make a 1m tree tray around the seedlings, and cover it with chaff.