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为了在干旱缺水的黑龙港地区实现粮棉双增产,省水科所在南皮试区经过6年多的试验研究,提出了麦棉间作套种、地膜覆盖和低额灌溉的配套技术,为黑龙港地区克服干旱缺水,提高田间用水效率,发展粮棉生产,提供了可行的适用技术及科学依据。麦棉间作盖膜节水灌溉技术主要包括以下三个方面的内容: 1.麦棉间作套种。麦棉面积为1:2,麦幅宽40厘米,棉幅宽80厘米。实行高低畦种植,小麦种在低畦。棉花种于高畦,棉畦比麦畦高10厘米。 2.塑料薄膜覆盖。小麦播种后随即覆膜,至来年春季气温稳定在5℃左右时揭膜。盖完小麦的地膜再盖棉花,即一膜两用。套播棉花可先盖膜后点种或先播种后盖膜。 3.低定额灌溉。灌水以田间持水量的％计。小麦土壤水分上下限分别控制在85-90％和55-65％;棉花上下限分别控制在80-85％
In order to achieve double grain yield and cotton yield increase in the arid and dry region of Heilongjiang Province, after more than six years of experimental study in the South Pilot Area where the Water Saving Bureau is located, the supporting technologies for interplanting cotton-cotton intercropping, plastic film mulching and low irrigation are proposed. Port area to overcome drought and water shortage, improve water efficiency in the field, the development of grain and cotton production, providing feasible and applicable technology and scientific basis. Wrap cotton interplastic water-saving irrigation technology includes the following three aspects: 1. Inter-crop interplanting cotton. Cotton area of 1: 2, 40 cm wide wheat, cotton width 80 cm. The implementation of high and low 畦 planting, wheat planted in low 畦. Cotton is planted in high tang, cotton sliver is 10 centimeters taller than wheat tang. 2. Plastic film covered. Immediately after sowing, the wheat is mulched and the temperature is stable at around 5 ° C until the spring of next year. Covers finished wheat and then covered with plastic film, that is, a dual-use film. Set cotton sowing can be the first point after sowing or sowing cover film. 3. Low-volume irrigation. Irrigation is measured in% of field capacity. Wheat soil moisture upper and lower limits were controlled at 85-90% and 55-65%; cotton upper and lower limits were controlled at 80-85%