It is estimated that there is too much watering during flowering, so it is advisable not to apply fertilizer during flowering, but to apply fertilizer before or after flowering.

Cultivation techniques of passion fruit

(1) Selection of Planting Area and Garden

The planting area and soil garden of passion fruit should be selected from three main aspects.

Planting area: The planting development area of this project is in Panxi area, and the valley and Erbanshan area with an elevation of 600- 1600 m in Jinsha River and Anning River Basin and 800- 1800 m in Yalong River Basin can be selected. Among them, the altitude of the high line in the yellow fruit-type passion fruit planting development area should be reduced by 250-300 meters, and the annual average temperature should be above 18 degrees. The selection of passion fruit planting area is the basic condition of economic planting in this project, which can not be ignored and should be strictly controlled.

Site conditions Passion flower planting and development park should be planted in areas with convenient transportation, sunny and leeward, irrigation conditions, good drainage and thick soil layer.

Soil conditions: sandy loam with fertile soil, loose texture and good air permeability should be selected. Clay, tight sand, cold sand and places that are easy to be washed away are not suitable for planting or planting after improvement.

The pH value of the soil is 7. Neutral and slightly acidic below 0 are suitable.

(2) Soil preparation before setting value

Soil improvement in orchards is relatively concentrated. The sloping land is changed into terraced fields, and the terrace ground is more than 2 meters wide. At the same time, the orchard drainage and irrigation and road system are planned.

Dig holes with a depth of 50 cm and a width of 60 cm, apply 30-50 kg of weeds or organic fertilizer to each hole, and then cultivate the soil for later use.

(3) Fixed value of fruit seedlings

The planting period can be carried out in spring, summer and autumn, with spring and autumn being the best.

The planting mode is mainly vertical fence, and the courtyard cultivation can be shed.

The planting density is 3× 2m. Planting per mu 1 1 1 plant.

Planting technology When planting seedlings, the old leaves should be cut off properly, and the nutrient bags should be dug out of the soil and not buried in the soil. When planting seedlings, mix well with a proper amount of decomposed organic fertilizer and sandy loam to make planting soil or covering soil. When planting, straighten out the root system, fill the soil in layers and compact it. Water the roots in time after planting. In the newly dug planting hole, the root neck of seedlings is slightly higher than the ground 8- 10 cm when planting. After planting, sort out the tree tray and cover it with a small piece of film of 50×50 cm.

(4) Planting and erection of piles

Scaffolding materials are mainly cement piles, iron wires or aluminum wires, and wooden sticks and bamboo poles can also be used.

Spacing and number of planting brackets The spacing between cement poles and piles is 4m, which is drawn with passion fruit plants. The dosage per mu is 56. The cement pole is 220 cm long, the planting depth is 40-50 cm, the ground height is 180 cm, the lead wire or iron wire is double-layered, and the head height is 100 cm.

(5) young tree maintenance

After fertilization and water management, the seedlings should be irrigated and drained in time, and light fertilizer or foliar fertilizer should be applied 2-3 times. Foliage fertilizer can be sprayed with 400 times of Mao Bifeng solution.

When the young trees grow to 40-50 cm, they should be erected in time to pull the vines of the young trees to the shelf.

The method and technology of pruning young trees adopt the method of single main vine, two layers and four branches. When the main vine grows to 70-80 cm, leave two lateral vine branches and drag them on the shelf respectively to make the first main vine. When the plant grows to 150- 160 cm, 1 strong lateral branches are left, which are used as two layers of main branches together with the main spreading branches, and are pulled in opposite directions respectively, forming a two-layer four-branch rattan shape. During this period, all the lateral branches and budding branches below 80 cm and between 80- 160 cm of the main vine should be cut or erased.

Use 1000 times of Baiphosphorus No.3 EC, 800 times of 75% chlorothalonil or 1000 times of 50% carbendazim warm powder to strengthen pest control.