Planting and field management method for Hongda tobacco varieties on mountain land autumn-flowering red earth

Abstract

The invention discloses a planting and field management method for Hongda tobacco varieties on mountain land autumn-flowering red earth. According to the method, seeding is performed within 40-50 days before transplanting, plowing is performed after preceding crops are harvested, then the earth is made idle, or early-maturing crops are planted in the earth, and land preparation is performed within 60-90 days before transplanting; transplanting is performed within 10-15 days before the rainy season, under-film transplanting is adopted, after transplanting, the earth is covered with mulching films, and holing is performed; 2.5 kg-3.5 kg of pure nitrogen is applied per mu, oil cake type organic fertilizer accounts for 45 %-55%, and 40 kg-50 kg of oil cake type organic fertilizer is applied per mu to serve as base fertilizer totally, 20 kg-25 kg of NPK-Zn-B compound fertilizer is applied per mu, and evenly mixed with the organic fertilizer to be applied as base fertilizer, 10 kg-15 kg of potassium sulfate is applied per mu, 75%-85% of the potassium sulfate is applied in holes within 35-45 days after planting, and 15%-25% of the potassium sulfate is applied through spraying within 45-55 days after planting; tobacco plants are topped two times, when center flowers blossom, topping is performed for the first time, big branches are removed, then within 10-15 days, topping is performed for the second time, and tobacco leaves of which the length is smaller than 50 cm, and all tobacco branches are removed; the tobacco leaves are harvested three times, 3-4 leaves are collected after the leaves on the lower portions become yellow and fall off, after 13-15 days, 3-4 leaves are then harvested, and the remaining leaves are harvested at a time after the leaves on the upper middle portions become yellow and fall off in a centralized mode. The method can be sufficiently adapted to the features of the mountain land red earth, promote early maturing and rapid flowering of tobacco seedlings and comprehensively increase the yield of the tobacco leaves and improve the quality of the tobacco leaves.

Description

technical field [0001] The invention belongs to the technical field of tobacco cultivation, and in particular relates to a planting and field management method of safflower dajinyuan on the red soil of autumn mountain. Background technique [0002] The flue-cured tobacco variety Honghua Dajinyuan is a typical representative of Yunnan's light-flavored tobacco leaves, and it is also one of the characteristic varieties that support the development of Yunnan's "two tobaccos". In particular, cigarette industry enterprises have a stronger demand for this variety. However, the planting area of ​​this variety has great limitations. It is mainly suitable for planting on purple soil, paddy soil and a small part of red soil, which greatly limits the expansion of its planting area. According to statistics, paddy soil and purple soil account for less than 50% of the arable land in Yunnan, and red soil accounts for more than 50%, while red soil accounts for about 70% of the arable land pl...

AI Technical Summary

Problems solved by technology

Because the red soil is mostly acidic and viscous, the ability to supply fertilizer in the early stage is weak, and the ability to supply fertilizer in the later stage is strong. It is commonly known as "autumn hair". The flue-cured tobacco planted on this kin

Images