What are the key points of Guangfoshou (Citrus medica var. sarcodactylis) planting techniques?

1. Planting:

Selection and preparation of the planting site: choose a sandy loam with black sandy mud that has ample sunlight and convenient drainage and irrigation, preferably a horseshoe-shaped site embraced on three sides, with a gentle slope of within 15°, or flat land is also acceptable. The planting site should have high ridges raised. Before planting, deep plowing should be done in the autumn and winter of the previous year; after weathering and maturing, drainage ditches should be opened all around, then the land should be formed into beds 30-40 cm high and 1.3-1.4 m wide (with furrows of 30-40 cm), and then large holes 50-60 cm deep and 50-60 cm wide should be dug on the beds, with the subsoil and topsoil piled separately, and 30-40 kg of decomposed organic fertilizer applied as base fertilizer, mixed evenly and left ready for planting.

2. Planting season:

Transplanting can be done in both spring and autumn, but it is better to transplant in February to March when the temperature rises and the new buds are about to sprout; too early brings spring cold, and too late means the seedlings have already sprouted, resulting in a low survival rate.

3. Planting density:

The row spacing for Guangfoshou is (2-2.5) m × (2.5-3.0) m, that is, 140-100 plants per mu is suitable. If planting in scattered idle land along field edges and corners, it can be planted more densely.

4. Planting method:

After cuttings or grafted seedlings have been cultivated for one year, seedlings over 50 cm tall, sturdy and free of pests and diseases are best; cut off the branches, leaving only one main trunk, and the roots should not exceed 20 cm in length; if too long, they can be shortened to facilitate planting. When planting, first put the topsoil dug out from the hole into the bottom of the hole, then add barn manure, compost and other base fertilizers, mix them, and then add a small amount of soil. Plant 1 seedling per hole, hold it upright, spread the fibrous roots around, firm the soil around the roots with fine soil by treading, and finally cover with soil slightly higher than the ground; after planting, water and then add some more soil. After transplanting, the soil should be kept moist regularly.