Light and simple cultivation method for open ground direct seeding of short-season cotton in coastal saline soil
A cultivation method and saline-alkali land technology, which is applied in the cultivation field of short-season cotton open-field late direct seeding instead of film-covered spring cotton, which can solve the problems of protracted boll-setting period, boll-opening dispersion, repeated flower harvesting, increased physical and chemical input and plant protection times, artificial Large physical and chemical investment and other problems, to achieve the effects of saving pesticides for pest control, facilitating centralized harvesting, and simplifying the management process
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Embodiment 1
[0029] In this experiment, Lu Mianyan 28 (spring cotton) and Lu 54 (short-season cotton) were used as test materials. Among them, the short-season Mianlu 54 used Bayer's Gaoqiao brand 60% imidacloprid suspension seed coating agent (10ml per kilogram) Coating. The experiment was carried out in Wangwa Village, Lijin County, Dongying City for two consecutive years from 2015 to 2016. Two planting modes are set for spring cotton mulching and seeding, and short-season cotton for direct seeding. Repeat 3 times, total 6 plots, plot area 50m 2 , Using 6 rows of equal row spacing planting, row spacing 76cm.
[0030] Spring cotton was sown on April 24, 2015 and April 26, 2016, respectively, and covered with plastic film; the spring cotton density was 3,500 plants per mu, using coarse pruning, and was sown on July 20, 2015 and July 18, 2016 Perform manual topping. Fertilization and other diseases, pests, weeds, etc. are controlled by local conventional management. Fertilization is divided...
Embodiment 2
[0037] 1) Irrigation to make moisture
[0038] Severe saline-alkali land with a salt content of 0.55%, irrigate water and press salt 18 days before planting, and use 140 cubic meters of water per mu;
[0039] 2) Scrape the soil to build a seed bed, plant seeds, fertilize, and spray herbicides in one time
[0040] On May 20th, a seeding machine with a front scraper (ZL200910209910.X) was used to scrape the 0~5cm surface soil layer to both sides to expose the bottom moisture to form a seed bed (see attached figure 1 );
[0041] The short-season cotton variety Lu54 is selected, with full and plump seeds with a germination rate of 80% or more, and after lint removal, they are coated with 60% imidacloprid suspension seed coating agent. kg;
[0042] Apply 50kg of NPK compound fertilizer (15:15:15) per acre and 15kg of resin-coated urea (release period 90d, nitrogen content ≥40%) as base fertilizer, and apply it to 10cm below the seed when sowing;
[0043] Before sowing, use the herbicide 48%...
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