Paris polyphylla and alnus ferdinandi-coburgii forest shade rapid-forming cultivation method

The invention provides a paris polyphylla and alnus ferdinandi-coburgii forest shade rapid-forming cultivation method. The paris polyphylla and alnus ferdinandi-coburgii forest shade rapid-forming cultivation method comprises the following steps: ditching and ridging by selecting a sloping land or a flat land with the altitude of 1200-3000 m and containing humus loam or fat sandy loam, and setting up a sun-shading net over land ridges, so that the whole land parcel is shaded; planting paris polyphylla seedlings on ridge platforms, and planting alnus ferdinandi-coburgii seedlings in ridge ditches; managing water and fertilizers of the paris polyphylla seedlings and the alnus ferdinandi-coburgii seedlings, so that the seedlings are survived; cutting to form a hole at the corresponding net top when alnus ferdinandi-coburgii grows to be close to the top of the sun-shading net, so that alnus ferdinandi-coburgii plants grow out of the net; cutting tips to seal the tips when the alnus ferdinandi-coburgii plants grow to the height of 2.5-3 m, so that the plants grow in the horizontal direction to form umbrella-shaped canopies; removing the sun-shading net after forming a forest shade due to mutual connection of the umbrella-shaped canopies of more than half of the alnus ferdinandi-coburgii plants; and digging and harvesting after paris polyphylla is cultivated for 5-7 years, ploughing the land parcel, applying base fertilizers, and planting new paris polyphylla seedlings so as to carry out next round of paris polyphylla cultivation. According to the invention, alnus ferdinandi-coburgii and paris polyphylla are interplanted; an ecological mat shelter is rapidly set up, so that a shady, moist and fertile growing environment is formed; and technological choices are provided for large-scale development of paris polyphylla resources.