A kind of Jatropha curcas direct seeding fast-growing cultivation method

Abstract

The invention provides a direct-sowing quick-growing cultivation method of Jatropha curcas L., which comprises the steps of digging cultivation holes with depth of 28-32cm and diameter of 58-62cm, mixing a special compound fertilizer, digging planting small holes with diameter of 3.8-4.2cm and depth of 3.8-4.2cm in the surface soil at the center of the holes when sowing, placing seeds in the planting small holes, and completely covering the small holes with fine soil; when the main stems of the seedlings are more than or equal to 50cm, cutting off the main stems of the seedlings from the parts 34-36cm away from the ground; when the lateral branches of the first-level seedlings are more than or equal to 80cm, cutting off the lateral branches from the parts 60cm away from the branches of the main stems of the seedlings; when the lateral branches of each levels are 2m high away from the ground, pruning the high parts. By adopting the method, the technical problems of high cost, variable growth conditions, abnormal growth, and deferred flowering and fruiting of the existing forced seed germination, nursery seedling raising, and seedling transplanting are overcome, management and artificial picking are facilitated, the method is simple, labor and fertilizer are saved, the Jatropha curcas L. grows well, quickly grows and is high in yield, and good economical benefit, social benefit and ecological benefit are achieved.

Description

technical field [0001] The invention belongs to the technical field of plant cultivation, and relates to a live-directed fast-growing cultivation method of Jatropha curcas. Background technique [0002] Jatropha curcas (Jatropha curcas L.), also known as Jatropha curcas, Jatropha curcas, etc., belongs to Euphorbiaceae (Euphorbiaceae) Jatropha genus. Fast-growing tree species have important development and utilization value in terms of water retention and soil stabilization, increase of soil organic matter, restoration of vegetation and prevention of rocky desertification. The oil content of Jatropha curcas seeds is between 40-60%, and the oil content is high. The main components are 41.3% oleic acid, 31.4% linoleic acid and 19.5% palmitic acid. It is an ideal raw material for preparing biodiesel. Jatropha curcas is easy to plant and has a high survival rate. It can bloom and bear fruit in the same year, and the fruit picking period can reach 40-50 years. , Guangdong and ot...

AI Technical Summary

Problems solved by technology

[0004] However, the research on the cultivation technology of Jatropha curcas is seriously lagging behind the research on its development and utilization, and only the cultivation and management models of other tree species are used for reference.

At present, the high-yield and high-efficiency cultivation technology of Jatropha curcas in my country is seriously lacking, resulting in extensive management after large-scale planting, low seed yield (150kg per mu or less), high production cost, and low income, which has affected the development of Jatropha curcas industry.

However, the existing Jatropha cultivation technology requires seed germination, nursery cultivation and seedling transplanting, which not only requires a large amount of fertilizer and labor, but also affects the normal growth of Jatropha seedlings due to transplanting.

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