Method for conducting crop rotation of asparagus lettuce, waxy corn, cowpea and winter cabbage in annual-four-crop mode in Chongqing

Abstract

A method for conducting crop rotation of asparagus lettuce, waxy corn, cowpea and winter cabbage in annual-four-crop mode in Chongqing. The method includes reasonably planting the first-crop asparagus lettuce in the crop rotation period, wherein sowing and seedling raising are conducted in the period from November 20 to the end of November of the previous year, the transplanting time ranges from January 1 to January 20 of the ensuing year, and the marketing time ranges from March 15 to the beginning of April; planting the second-crop waxy corn, wherein the sowing and seedling raising time ranges from January 20 to the end of January, the transplanting time ranges from February 15 to the end of February, and the marking time ranges from the end of May to the mid of June; planting the third-crop autumn cowpea, wherein the direct seeding time ranges from June 20 to the end of June, and the marketing time ranges from August 1 to the end of September; planting the fourth-crop winter cabbage, wherein the sowing and seedling raising is conducted at the end of June, the transplanting time ranges from August 20 to the end of August, and the marketing time ranges from the end of November to the beginning of December. Due to the fact that scientific interplanting method is adopted to select excellent species, the growing mode is improved, materials are taken locally, waste is reused, the sowing and the planting are conducted in advance, marketing is conducted in advance, the production value is greatly increased, and the method meets the market demand and has obvious economical benefit.

Description

technical field [0001] The invention relates to agricultural cultivation technology, in particular to a method for cultivating lettuce, glutinous corn, cowpea, winter cabbage and four crops in a year in Chongqing Background technique [0002] Farmers planting vegetable crops in Chongqing usually plant two to three crops a year. At present, they mainly use monocropping, the multiple cropping index is low, and the land utilization rate and yield are extremely low; everyone's sowing period is basically the same or relatively Late, resulting in a large number of similar vegetables on the market during the listing period, the low unit price makes their economic benefits not high; lack of vegetable cultivation technology, premature death, resulting in low yield. Chongqing currently uses monocropping methods to grow lettuce, corn, cowpea, winter Cabbage cultivation techniques are as follows: [0003] Lettuce: The seeds are not carefully selected, and the taste is poor, so lettuce ...

AI Technical Summary

Problems solved by technology

[0002] Farmers planting vegetable crops in Chongqing usually plant two to three crops a year. At present, they mainly use monocropping, the multiple cropping index is low, and the land utilization rate and yield are extremely low; everyone's sowing period is basically the same or relatively Late, resulting in a large number of similar vegetables on the market during the listing period, the low unit price makes their economic benefits not high; lack of vegetable cultivation technology, premature death, resulting in low yield. Chongqing currently uses monocropping methods to grow lettuce, corn, cowpea, winter Cabbage cultivation techniques are as follows:

[0003] Lettuce: The seeds are not carefully selected, and the taste is poor, so lettuce is not popular with the public when it is on the market

[0004] Waxy corn: The seeds are not carefully selected, they are small, taste bad, and the yield is low; when cultivating seedlings, put the dry seeds directly into the nutrient group, the survival rate is low, and the yield is low; buy plastic tools with small space for the nutrient group , increase the input cost; when making nests, the amount of fertilizer added to the nest is small, and it is directly in contact with fertilizers when transplanting, and additional chemical fertilizers and organic fertilizers are added after budding, and the amount of chemical fertilizers is not controlled, resulting in root rot during the growth of seedlings , low output

[0005] Autumn cowpea: without careful selection of seeds, the harvested autumn cowpea has poor sales performance, heat resistance, bad taste, and low yield; when transplanting or live broadcasting, make a nest in the open field, fertilize, and transplant; in autumn cowpea vines are about to come out It is necessary to buy poles before inserting them into the soil, which increases the input cost and man-hours; in continuous high temperature weather, watering every day to cool down causes many roots to rot, and the timing of watering and cooling cannot be grasped. Most of them choose to water in the morning. aborted, low yield

[0006] Winter cabbage: The seeds are not carefully selected, and hybrid planting is chosen. The harvested winter cabbage is small, tastes bad, and the yield is low; Additional chemical fertilizers and organic fertilizers were added after the buds opened, but the amount of chemical fertilizers was not controlled, resulting in root rot during the growth of seedlings and low yields; in continuous high temperature weather, watering every day to cool down caused a lot of water and root rot, and it was impossible to control When watering to cool down, most of them choose to water in the morning, and they die halfway, and the yield is low