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适时灌水是夺取棉花高产稳产的有效措施。怎样掌握棉花的灌水适划呢?总的说要根据自然条件和气候特点,结合棉花生长期中的需水规律及生育期间的土壤水分来定。具体应考虑: 一、气候特点及有效雨量的利用。我省棉田分布在川中一带丘陵区,坡台地较多,地貌、光照条件较好,但土层普遍瘦薄,保水保肥力差。年降雨量为800—1300毫米左右,冬春降雨量
Timely irrigation is an effective measure to seize high and stable cotton yield. How to master cotton irrigation plan? Generally speaking, according to the natural conditions and climate characteristics, combined with the growing season of cotton water demand and soil moisture during planting to be. Specific considerations should be: First, the climate characteristics and the effective use of rainfall. Cotton fields in Sichuan Province are distributed in the hilly areas in the central Sichuan Basin. There are many plateaus in the area, and the topography and light conditions are good. However, the soil layers are generally thin and poor in water and soil conservation. Annual rainfall of about 800-1300 mm, winter and spring rainfall