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全苗是棉花丰产的基础。但由于播种后土壤失墒、播后遇雨、烂芽烂籽、病虫危害等原因,常造成棉田缺苗断垄。对此,要及早调查及时发现,并根据不同情况,采取相应的补救措施,以确保全苗。助苗出土对失墒较重不能出全苗的棉田,可以浇小水补墒,但浇水后要用钉耙划两遍,以防板结。如行距较大,可单独浇垄。水源不足的,可担水只浇断垄处。对土壤下部墒情较好,只是表土失墒的棉田,可轻压接墒,使棉籽接触到湿土。若播后遇雨,要及时锄划,以破除板结,提高地温。帮助棉苗出土。偏芽补种因落干、烂籽、烂芽出苗不足五成的棉田,应在出苗后十天内,用浸种催芽后的种子补种。做法是:先将棉种用温汤浸种,再用冷水浸
Full seedling is the basis for high yield of cotton. However, due to sowing soil moisture after sowing, sowing after rain, rotten bud rotten, pests and other hazards, often resulting in cotton seedlings off ridge. In this regard, we must promptly investigate the timely detection, and according to different situations, take appropriate remedial measures to ensure that all seedlings. Miao Miao unearthed on the loss of moisture heavier cotton seedlings can not be a full field, you can pour small water soil moisture, but after watered with rakes to draw twice to prevent hardened. Such as the line spacing larger, can be poured alone ridge. Insufficient water, can bear water only pouring off the ridge. Soil moisture in the lower part of the soil is good, but the loss of soil topsoil cotton fields, light pressure then moisture, cottonseed exposure to wet soil. If the rain after the broadcast, to hoe draw in time to break the compaction, improve ground temperature. Help cotton seedlings unearthed. Partial Bud replanting due to dry, rotten seeds, rotten bud sprouting less than 50% of cotton fields, should be within 10 days after emergence, soaking seed germination with seed replanting. Practice is: first cotton seed soaking with warm soup, then cold water soaked