Planting management techniques of macadamia nuts

Grafting propagation of 1. 1

In general, seeds with large nuts and well-developed seeds are selected for breeding and cultivation every year around 165438+ 10. After the seeds are selected, they should germinate on the sand bed, then shade them and water them 2-3 times a day. Generally, the seeds begin to germinate in 40-50 days. When the seedlings grow to 8cm- 12cm, transplant them into the corresponding seedbed, and protect the taproots of the nut seedlings during the transplanting process. After the seedlings survive, remove the shade shed in time, and do a good job in fertilizer and water management and pest control. Grafting can be carried out when the diameter of seedlings reaches 8 mm- 12 mm, and abdominal grafting and split grafting can be used. Grafting seedlings must choose those branches that grow well, sunny and disease-free. In February and March, the whole grafting can be carried out, and the survival rate can reach over 80%.

1.2 cutting propagation

In this way, we should select those branches whose growth period is 1-2 years and girdle them 18-22 days before cutting, so as to improve their nutrient accumulation and ensure the survival rate of nut seedlings. The actual operation is as follows: cut branches about 1.5-20 cm long on the sand bed and make them germinate. Shade after cutting, and make sure to water it 2-3 times a day. When more roots grow out, transplant them into corresponding nutrition bags and do a good job in fertilizer and water management. When the new shoots grow to 2-40 cm long and the leaves are dark green, they can be transplanted. At the same time, it is necessary to pay attention to the general resistance of cutting propagation, so try to avoid high temperature or dry weather when transplanting to ensure the actual yield of nuts.

2 Selection of nut plantations

When choosing a nut plantation, you must choose an area with good shelter from the wind, abundant sunshine, fertile soil and good drainage. However, the mountains in Keno Township are steep and the rainfall will be concentrated after summer. Therefore, planting nuts should choose the same height excavation platform as much as possible. Planting density must be determined according to the variety of nuts. Under normal circumstances, the row spacing of nuts should be 5*7 meters, and 19 plants should be planted per mu, and the planting should be carried out in a big pit. Then apply about 30 kilograms of organic fertilizer to each hole, mix about 2 kilograms of calcium, phosphorus and magnesium fertilizer into the soil as the base fertilizer, and then backfill the soil. Try not to do it in high temperature and dry weather during planting, and protect the roots when transplanting. Irrigation should be carried out after planting to ensure that the soil is flush with the ground after sinking. It is also necessary to ensure good roads and drainage facilities in the plantation to lay the foundation for the good growth of nuts.