NOVELTY - Plant two acid source active agent comprises 14-22 wt.% plant vitamin D3, 72-84 wt.% plant oleanolic acid, and 2-6 wt.% plant caffeic acid, prepared by sealing at constant temperature of 28 degrees C, under oxygen free condition for 30-34 days.    USE - Used as a plant two acid source active agent.    ADVANTAGE - The agent mainly utilizes self-made plant oleanolic acid to improve plant growth condition; is economical; achieves high yield. The cultivating method assures natural status of bamboo shoot biological clock by maintaining water and temperature status, does not limit the growth, thus achieving growth throughout the year.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for cultivating seasonal ecological bamboo shoot in agricultural area, comprising (i) carrying out spatial arrangement for bamboo shoots in the land with length of 2000-3000 mm, width of 1000-1500 mm, and height of 300-700 mm according to the growth environment domain point, (ii) using plant two acid source active agent, constant-temperature decomposition of bamboo shoot shell to obtain liquid and residue, crushing plant straw, preparing slag liquid and residue, (iii) arranging bamboo shoot growth substrate layer in the configuration space: (a) according to each 180-220 g of plant two acid source active agent, adding 100 kg times of water and preparing diluted solution, configuring diluted solution into two groups according to per acre land of bamboo forest, uniformly spraying diluting solution in the forest land, (b) taking 45-55 parts straw plant crushed slag, 10-20 parts livestock manure, and 3-9 parts domestic type decomposed waste resource, mixing, laying residue to a height of 350-400 mm height in bamboo land, using decomposed bamboo shoot shell obtained liquid and residue and crushed plant straw prepared slag liquid and residue, (c) taking sand soil and paving to a height of 150-250 mm, and (d) uniformly spraying the other group of diluting solution, (iv) using decomposed bamboo shoot shell obtained liquid and residue and crushed plant straw prepared slag liquid and residue, according to each 180-220 g of plant two acid source active agent, diluting with 100 kg water, applying according 1 acre per area, and then applying to a substrate layer according to the ratio, and (v) preparing mixed fertilizer, applying it one time for every 15-30 days to make forest land surface layer is uniformly covered.