Applicant: Yunnan Film and Television Production and Distribution Co., Ltd.

Number of groups: 25

Date of shooting: 20 1 1.9

Production cycle: 6 months

Executive summary:

1964, the central government made a strategic decision: "Third-line construction should be grasped, and chengdu-kunming railway should be repaired quickly". Xiao, the company commander of the Red Railway Company, led his company into the mountainous areas of Sichuan and Yunnan to build a railway. Jiang Lichun, a recruit, wants to fight and be a hero, but he is not at ease to stay in the railway corps. To this end, he had many contradictions with the company commander, platoon leader and squad leader, and even had a fight with the soldiers. Seeing that the people in the cottage were so closed and backward, he changed his mind and stayed. Niu Dameng is simple and clever, and thinks for himself everywhere. All ages are gentle and weak. Such a group of new recruits are working hard in the melting pot of railway soldiers to build tunnels and bridges in the wind and rain. In order to build the tunnel, Jiang Lichun and other railway soldiers overcame the danger of flying stones, solved the misunderstanding of fellow villagers, and solved the life problems such as mountain fires and floods during the construction period. Some railway soldiers also paid their lives in the accident, and finally got through one tunnel after another and successfully built chengdu-kunming railway. Belonging to tropical tree species, it likes high temperature and high humidity climate and has low cold tolerance. In case of long-term low temperature of 5 ~ 8℃, its branches will suffer from freezing injury to avoid frost. Guangzhou, Nanning and other places in southern China can safely overwinter in the open field in normal years and suffer from freezing injury in cold years. In the vast areas of northern South China and even North China, only potted plants can be moved into greenhouses or indoors in winter. Room temperature should not be lower than 10℃, so it likes light.

It should be planted in sunny places.

The requirements for soil are not harsh. Sandy soil or clay are suitable, like acidic soil, and are more resistant to drought and water. The requirements for fertility are not very high. Generally, the soil with medium fertility and high phosphorus and potassium fertilizer has lush flowers, bright colors and sufficient water, and the soil with high nitrogen fertilizer has lush branches and leaves and many flowers, but the color is not bright. When planting, decomposed cake fertilizer or garbage should be applied as base fertilizer before and during flowering. The origin of these trees is unknown, but they may have originated in India. It is widely planted in South China, Taiwan Province Province, Indochina Peninsula and Nanyang Islands with immigrants. According to ancient records in China, Zhao Tuo, king of South Vietnam, presented a kapok tree to the Han Dynasty in the 2nd century BC. Kapok is divided into white kapok and red kapok.

In China, it is planted in Guangzhou, Zhuhai, Kunming, Shenzhen, Fuzhou and Xiamen. In particular, kapok is planted as a street tree in Guangzhou and Xiamen. Every year just after the Lantern Festival, kapok trees begin to blossom. Cultivation mode

Propagation by sowing, cutting and rameting. When the capsule is harvested before cracking, the seed germination and storage period is short, and it is often sown with the harvest, or it can be stored in wet sand for a short time. The hole is drilled and covered with soil for 2cm, and the average temperature is above 20℃. Generally, seedlings can emerge in 4 ~ 5 days. Cutting is mostly carried out in February-March or rainy season, and the length of big branches is 80- 100 cm and the transverse diameter1-2 cm; Insert the seedbed into the depth of 10 ~ 15 cm, and always keep the seedbed moist; The ramet germinates from the root of the mother plant, and it is easier to survive by cutting off a section of the mother root and fibrous root.

Rootstock cultivation

In Panzhihua city, kapok seeds can be harvested when they mature in April-May. Because of the high oil content of seeds, they are easy to deteriorate and lose their germination ability, and it is generally required to sow in time in the same year after harvest. Seedbed seedling is raised by drilling. The row spacing of drilling is 20 cm and the depth is 5 cm, and the seeds are sown in the ditch. Cover the soil with 2cm, and cover the topsoil with grass; Germination began in 6 ~ 7 days after sowing, and basically sprouted in 13 ~ 15 days. After the seedlings are unearthed, loosen the soil and weed in time, weed appropriately, and pay attention to pest control. When the seedling height is 4 ~ 5 cm and there are more than 2 primary leaves; Can be transplanted into a nutrition bag, the height of the seedling is about 40 cm, and it can be transplanted to cultivate large seedlings. When the DBH of seedlings is1m ~115 cm, grafting can be carried out.

Grafting time

In Panzhihua area, it is suitable to graft kapok in February-March and June-July. From February to March, the temperature rose rapidly, and kapok began to sprout. At this time, grafting was easy to survive. The high temperature in April-May is easy to cause the scion to dry up. June-July is the rainy season in Panzhihua area, and the temperature drops, so grafting should avoid rainy days.

Select scion

Two-year-old flowering branches with strong growth, full buds and no pests and diseases were selected as scions from flowering kapok mother trees. The diameter and thickness of the selected scion are required to be 0. 17 cm ~ 1~2cm, and the bud eye spacing is 1~2cm. The leaves of the collected cuttings should be cut off immediately to reduce the water loss of the branches, and the branches should be wrapped in a cool place with a wet towel, preferably when they are collected. When the scion needs to be stored for several days, both ends can be sealed with paraffin and buried in a sand bed with a thickness of 4 cm ~ 6 cm, and attention should be paid to moisturizing and ventilation.

method of grafting

When grafting kapok, single bud cutting grafting is better. It was found that no matter how many buds were left on the scion, when the 1 th bud germinated, the germination of other bud eyes was inhibited. When grafting, the scion is cut first. The method is as follows: select a complete bud on the scion, cut a microstrip or plane with the length of 1.5 ~ 2 cm at the lower end of the back, cut a 45-degree oblique plane on the back, and cut it off at the upper end of the bud 1cm. The scion is 4 cm long. For rootstock seedlings, it is required to cut the rootstock at the height of 15 cm from the ground, and cut a knife longitudinally on the smooth surface of the rootstock with the length of 1 15 cm ~ 2 m, and it is appropriate to take microstrip xylem. Insert the cut scion into the joint, so that the cambium on both sides is aligned and closely connected, and the upper end of the scion is exposed. Finally, it is bound with plastic film tape from bottom to top, and only one layer of grafting film is wrapped at the eye of scion bud, which is easy to break automatically after grafting.