Pennisetum americanum breeding method in winter

Abstract

The invention discloses a pennisetum americanum breeding method in winter. The pennisetum americanum breeding method comprises the following steps of: (1) after the beginning of winter, removing all leaves and terminal buds of pennisetum americanum seedlings, transplanting the seedlings with roots into a greenhouse and maintaining the room temperature to be 3-30 DEG C and the humidity to be 70-80%; (2) after sprouts grow out from stem joints of the pennisetum americanum seedlings, cutting off the stem joints with sprouts, soaking the stem joints with 100-200mg / L IBA solution for 4-8 hours, then inserting the stem joints into soil in a cuttage manner, and when grown seedlings are 20-30cm high, cutting off the seedlings at position 1-2cm away from roots; and (3) continuing cultivating the seedlings for 0-120 days (in the process of cultivation, every time the seedlings grow to 20-30cm high, cutting off the seedlings at the position 1-2cm away from the roots), moving the seedlings into anutrition pot for cultivation for 1-2 weeks, then hardening the seedlings for 1-2 weeks, and transplanting the seedlings into a large field. The pennisetum americanum breeding method in winter effectively solves the problem of overwintering of pennisetum americanum in the north, and can provide the seedlings at any time, has the advantages of short seedling cultivation cycle and high survival rate being above 90%.

Description

technical field [0001] The invention relates to a winter propagation method of hybrid pennisetum. Background technique [0002] Hybrid Pennisetum is a triploid hybrid produced by mating diploid Pennisetum americana and tetraploid Elephant Grass. This variety is a tropical forage grass planted in the middle and lower reaches of the Yangtze River. It generally produces 150,000 kg / ha of fresh grass. The fresh grass has a high crude protein content and a relatively balanced amino acid content. It is a high-quality feed for livestock and fish. The acreage has grown rapidly in recent years. Hybrid Pennisetum can overwinter naturally in South China, but it cannot overwinter naturally in the middle and lower reaches of the Yangtze River and north of the Yangtze River. It can only be cultivated as a year, and the seeds are sterile, so it needs to be moved to a greenhouse or stored in a pit or cellar to protect the species. Seedlings overwinter. However, the existing overwintering ...

AI Technical Summary

Problems solved by technology

However, the existing overwintering methods for seedlings have the following shortcomings and deficiencies: the survival rate is 76.9%-89.60%, and the survival rate is low; Seedlings need to be raised in the field, and the seedlings can be transplanted to the field after the seedlings are successfully raised; the time of raising seedlings needs to be determined according to the conditions of the field, and the time is difficult to control

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