论文部分内容阅读
在地膜植棉实践中,膜内播种曾有高温灼苗和膜上穴播曾有缺苗断垄的教训。农一师1982年膜内播种时,因放苗不及时,棉苗因灼伤损失了5000亩,占膜内播种面积11.2％;1983年膜上穴播因肥、种重叠,播种过深和偏湿整地等原因,缺苗株率达34％。几年来,为了一播全苗,农一师各团场依据种子萌发特点,不断完善机具性能,提高种子与整地质量,因而保苗率显著提高。 地膜棉一播全苗的关键是狠抓三个严格要求和适期早播。 1.严格要求棉种质量
In the practice of plastic film mulching, seeding in the film had high-temperature seedling and seedling on the film had had missing seedlings broken ridge lessons. Nongyi division 1982 in-film sowing, due to Fangmiao not in time, cotton seedlings due to burn loss of 5000 acres, accounting for 11.2% of the film sown area; 1983 film on the film due to fertilizer, species overlap, sowing too deep and partial wet Site preparation and other reasons, lack of seedlings rate of 34%. In recent years, in order to sow the whole plant seedlings, all farmers’ farm division bases on the characteristics of seed germination, continuously improve the performance of the plant and improve the quality of seeds and soil preparation, so the seedling protection rate is significantly increased. Mian Mian cotton seedlings broadcast the key is to pay close attention to three strict requirements and early sowing. 1. Strict requirements cotton quality