A planting and field management method of safflower dajinyuan on the red soil of autumn mountain

Abstract

The invention discloses a planting and field management method of safflower dajinyuan on the red soil of autumn mountain. According to the method, seeds are sown 40-50 days before transplanting, and the previous crops are harvested and then plowed, and then the soil is allowed to slack in winter or early-maturing crops are planted, and the ground is prepared 60-90 days before transplanting. Transplant 10-15 days before the rainy season, using the transplanting method under plastic film, cover with plastic film and open holes after planting. Apply 2.5~3.5kg of pure nitrogen per mu, 45~55% of oily organic fertilizer, 40~50kg per mu, all as base fertilizer, 20~25kg of NPK‑Zn‑B compound fertilizer per mu, mix with organic fertilizer as base fertilizer Apply 10-15kg of potassium sulfate per mu, 75-85% is applied in holes 35-45 days after planting, and 15-25% is sprayed 45-55 days after planting. The tobacco plants are topped twice, and the tobacco leaves are harvested three times. The method can fully adapt to the soil characteristics of the mountainous red soil, promote the early growth and rapid growth of tobacco seedlings, and comprehensively improve the yield and quality of 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 kind of red soil with autumn hair, especially Honghua Dajinyuan, is prone to tobacco leaves. Turning green, the growth period is longer, and the common phenomenon of greening and miscellaneous gas after roasting has caused heavy economic losses to tobacco farmers

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