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影响亚麻纤维产量质量的外界因素很多,其中亚麻生育期间的土壤水分,尤其是6月中、下旬的降水量(因大面积生产多没有实行灌溉),是其主要因素之一。亚麻生育期短,但需水量大,一般每生产1公斤原茎需要400公斤左右的水。快速生长期到开花初期亚麻株高每昼夜平均伸长3厘米左右(6月中、下旬到7月初),这段时间耗水量占全生育期总耗水量的73～80%,若供水不足,将会影响光合作用而导致减产。据测定:亚麻快速生长期间最低需水指标90～100毫米,但此期本省亚麻主产县自然降水仅有40.7～55.6毫米,供需量差距很大。据调查,若此期能适时灌水1～2次,每次25～30毫米,原茎平均每亩增产40～50公斤,出麻率提高0.6～1.8%,亩增收20元以上。在6月中、下旬到7月初干旱的年份及时灌水,增
There are many external factors affecting the quality of flax fiber production. Among them, the soil moisture during flax growth, especially the rainfall in mid-to-late June (due to the lack of irrigation for large area production) is one of the major factors. Flax growth period is short, but water demand, generally produce about 1 kg of raw stem about 400 kg of water. Rapid growth to early flowering Flax plant height per day and night elongation of about 3 cm (mid-June, late to early July), this period of water consumption accounted for 73 ~ 80% of the total water consumption during the entire growth period, if insufficient water supply, Will affect the photosynthesis and lead to yield reduction. It is determined that the minimum water requirement during rapid growth of flax ranges from 90 to 100 mm, but the natural precipitation in the main producing areas of flax in this province is only 40.7-55.6 mm, with a wide gap between supply and demand. According to the survey, if this period can be timely irrigation 1 or 2 times, each 25 to 30 mm, the average yield of 40-60 kilograms of raw stems per hectare increased by 0.6 to 1.8%, mu increased by 20 yuan. In mid-June, late-July drought in a timely manner irrigation, increase