早苗、壮苗、全苗是棉花高产的重要基础。但近年来,棉花苗期多雨,新的排水系统还不够完善,明涝暗渍,土壤含水量过大,根系水渍而窒息,抗病力减弱,造成早播不能早发,达不到早、壮、全的要求,严重地影响了产量。广大贫下中农在长期劳动实践中积累了深沟高畦防病的经验,去年我们在长川坝大队第九生产队进一步做了试验,结果证明,开深沟对防病、早发、减少烂铃确有十分显著的作用。 Sanae, strong seedling, full seedling is an important basis for high yield of cotton. However, in recent years, cotton seedling rainy season, the new drainage system is not yet perfect, bright waterlogged dark stains, excessive soil moisture, waterlogging and root suffocation, weakened disease resistance, resulting in early sowing can not be early onset, less than early Strong, all the requirements seriously affected the yield. The vast majority of poor peasants and middle peasants have accumulated experience in the prevention and treatment of deep-grove and high-pitched plant diseases in their long-term labor practices. Last year we conducted a further trial at the ninth production team of Changchuanba Brigade. The results showed that opening the deep grove to prevent disease, It does have a very significant effect.