Macadamia nuts can also be called Queensland chestnut, Australian walnut, and macadamia. Among the many dried fruits, they have the highest economic value and are known as the “King of Dried Fruitsâ€. The nuts have extremely high nutritional value and medicinal value. Xiaobian will briefly talk about the key points of macadamia nut cultivation techniques and pest control measures. 1 Garden choice Garden selection: Choose sheltered from the wind, sunny, deep and fertile soil, well drained, loose soil with pH 5~6, and cultivated in areas with an annual temperature of 15-30 degrees and annual rainfall of 1 000-2 000 mm. 2 Garden opening (1) When planting in hilly and mountainous areas, it is necessary to adopt contouring to excavate terraces for planting, which can reduce soil erosion. (2) Plant spacing: every 330 plants/hm2, plant spacing 5 m, row spacing 6 m. (3) Planting hole specifications: the hole width is 60 cm×60 cm, the hole depth is 50 cm, and the bottom of the hole is 40 cm×40 cm. (4) Back to the hole: When returning to the soil, use the fermented fertilizer, compound fertilizer and other fertilizers to evenly mix the cooked soil back to the bottom, and then return to the soil. 3 colonization (1) Colonization time: choose to plant in cloudy or light rain days from June to August. (2) Selection of seedlings: Select strong seedlings with a diameter of 1 cm or more, a height of 35 cm or more, and a high degree of lignification. (3) Colonization: The nutrient bag filled with seedlings at the time of planting is properly compacted, but it is not allowed to use the foot to avoid crushing the young roots. After planting, it is necessary to fill the root water. (4) Reversal: After the planting, take drought-preventing and seedling-preserving measures. Cover the grass in the dry season, cover the plants for 1 or 2 times a day, and check the plants at the same time. For the dead plants, timely replanting should be carried out. 4 post-plant management (1) Maintenance of the planting belt In the dry season, weeding and weeding are used to repair the planting belt, ensuring that the 2 m wide belt surface is flat and inwardly inclined, so that the roots of the dew roots and the depressions are filled, so that the width of the planting points can reach 1.5 m or more, thus preventing the inner wall from falling down. Plant. (2) Weeding Keep weeds within 30 cm of the canopy drip line. When using herbicide weeding, avoid spraying or drifting the agent onto the macadamia tree. (3) Pressing Starting from the second year of the tree, the soil will be changed from July to August every year. The canopy drip line is dug 1 m long, 0.4 m wide and 0.4 m deep, and then filled with green manure and decomposed fertilizer to fill the pit, which is beneficial to the development of nut tree roots. 2.5 Management of the orchard (1) shaping and trimming The saplings of 1 to 3 years old are firstly dried, and the fixed height is 60-80 cm. The three branches with different growth directions are selected as the main branches of growth in the future. From the three main branches, two or three branches with uniform growth and distribution are cultivated to form the backbone branches. The spacing of the backbone branches is 40-50. Cm; according to this method, the selection of the second and third grade branches. (2) Fertilizer management When fertilizing, it should be applied diligently and thinly applied. At the same time, it should be combined with cultivating and weeding, fertilizing for 3 to 4 times, fertilizing with organic fertilizer, mixing appropriate inorganic fertilizer, and paying attention to watering in dry season. (3) Management of the results garden The flowering period, the fruit setting period, the early stage of fruit development and the late stage should be determined according to the growth intensity of the tree potential. The fertilization is applied with nitrogen, phosphorus and potassium in combination, and the ratio is 1:1:1.5. Generally, the application rate per plant per year is 3 kg, and the fertilization is carried out 4 times in 2, 4, 7, and 10 months. The macadamia flowering period mainly relies on bee pollination, and the pollination rate of the wind media is low. Therefore, it is necessary to plant the varieties at the time of planting, and to raise bees in the flowering garden. Spray 5 times of potassium dihydrogen phosphate or anti-falling and Yunda after 5-10 days after flowering. 120. Spray again once during fruit growth and development to reduce fruit drop and increase yield and quality. 6 diseases, insects, rodents and their prevention (1) Diseases The main diseases are: stem canker, flower plague, gray mold, etc.; Control measures: keep the trees in the garden ventilated and light; use 70% sensitized zinc 800 times liquid plus high-fat spray to control flower plague; use 80% carbendazim 250 mg / L spray to prevent stem disease; use benzenelite or Capsella prevents gray mold. (2) Pests The main pests are: litchi small moth; Control measures: use black light to trap and kill during flowering and fruit setting; 10% pyrethrum emulsifiable concentrate 1 000 times solution, 20% sterilized ester emulsifiable concentrate 1 500 ～ 3 000 times solution or 80% trichlorfon soluble powder 800 times during fruit expansion period Liquid spray control. (3) Rats Rodent control measures: pay attention to eradicating the mouse points, using rodent control or cat prevention; using anticoagulant rodenticide such as 0.2% enemy sodium salt or 0.38% killing mouse poisonous valley saturated bait all field control. Portable Color Doppler Ultrasound Machine Portable Color Doppler Ultrasound Machine,Obstetric Color Ultrasound,Prostate Color Ultrasound,Obstetrical Examination Instrument Mianyang United Ultrasound Electronics Co., Ltd , https://www.uniultrasonic.com
