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我县1982年引入花生地膜覆盖栽培技术,到1985年累计推广面积16005.6亩,均产387.8公斤,比对照亩增98.7公斤,增产效果显著。据测定,与对照相比覆膜栽培的主要优点是:5cm地温出苗期高3.3—4℃,幼苗期高3.1—3.4℃,花针期高4—3.2℃,饱果成熟期高0.5℃。同时0—30cm土壤含水量幼苗期高1.4—4％、花针期高1.5—3％、饱果成熟期高2.3％,而0—30cm土壤有机质含量则下降0.4％,使速效氮、速效磷和速效钾含量分别提高14.4、12.7和12.5ppm;上述条件的改善,使幼苗期至花针期的根干重、主茎高、侧技长和分枝数均大于对照,从而使单株开花量增加18.5朵,单株结果数多1.3—4个,双仁果率增加4—6％,饱果率提高5—8％,公斤果数减少40—60个,最终实现了产量和收入的增加。
In 1982, the county introduced peanut plastic film mulching cultivation technology. By 1985, a total area of 16005.6 mu was popularized, with an average yield of 387.8 kilograms, 98.7 kilograms more than that of the control plot. The yield increase was remarkable. It was determined that the main advantages of plastic filming compared with the control were: high temperature 3.3-4 ℃ in 5cm warmth seedling stage, 3.1-3.4 ℃ in seedling stage, 4-3.2 ℃ in flower needle stage and 0.5 ℃ in full ripening stage. At the same time 0-30 cm soil water content was 1.4-4% in seedling stage, 1.5-3% in flower needle stage and 2.3% in full ripening stage, while the content of organic matter in 0-30cm soil layer decreased by 0.4% And available potassium increased by 14.4, 12.7 and 12.5ppm, respectively. Improvement of the above mentioned conditions made root dry weight, main stem height, lateral length and branch number larger than those of the control from seedling stage to flower stage, Increased by 18.5 and the number of fruit per plant increased by 1.3-4. The fruit yield increased by 4-6%, the full fruit rate increased by 5-8% and the number of fruit decreased by 40-60. Ultimately, the output and income increase.