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1978～1980年试验是在肥地棉田进行,亩施土杂肥8000斤,过磷酸钙100—150斤,鸡粪800—1000斤,尿素50～60斤,饼肥50～100斤。耕层土壤含有机质1.328～1.730%,全氮0.0828—0.0985%,全磷0.183—0.216%,有效钾200—314ppm。选用鲁棉1号、72系,优势组合F_1(鲁棉1号×岱字棉15和鲁棉1号×邢台6871)。采取塑膜栽培和育苗移栽,等行种植,降低密度(1800～3500株/亩),常规管理,大区对比。三年来获得亩产皮棉200～250斤,现将高产棉花的生育规律归总如下。(一)棉花蕾铃脱落状况高产棉田,在开花期前,除机损、虫害外,很少因内因而引起蕾铃脱落,一般随开花量增多而脱落加重,在开花期后30天上下的时间,将是蕾
1978 ~ 1980 test is carried out in the fertile land of cotton, miscellaneous soil fertile fertilizer 8000 kg, superphosphate 100-150 kg, chicken manure 800-1000 kg, 50-60 kg of urea, cake fat 50 to 100 kg. Topsoil soil organic matter 1.328 ~ 1.730%, total nitrogen 0.0828-0.0985%, total phosphorus 0.183-0.216%, available potassium 200-314ppm. The selection of Lumi 1, 72, the dominant combination F_1 (Lumi cotton × Dai Zi cotton 15 and Lu cotton × Xingtai 6871). Take plastic film cultivation and transplanting seedlings, planting and other lines to reduce the density (1800 ~ 3500 / mu), conventional management, regional contrast. Three years to obtain per mu lint 200 ~ 250 pounds, now the law of reproductive growth of high-yield cotton total sum as follows. (A) cotton buds shedding high yield cotton fields, before the flowering period, in addition to machine damage, insect pests, rarely caused by internal causes of falling off, usually with the amount of flowering increased shedding heavier, 30 days after flowering up and down Time will be bud