一、选用适宜的大豆品种盐碱土和砂壤土孢囊线虫发生严重,选用抗线虫品种,表潜黑土因水分好,肥力高,大豆长势繁茂,宜选用偏早熟秆强的高产品种。普通黑土选用剩余期适宜的高产品种。二、精细整地、改善土壤的理化性状土壤环境恶化是造成重茬大豆减产的一个主要原因,实行深翻、深松改善土壤水、肥、气、热状 First, the selection of suitable soybean varieties saline-alkali soil and sandy loam cyst nematode serious occurrence, selection of anti-nematode species, surface submerged black soil due to good moisture, high fertility, soybean growing lush, should use partial premature stalks strong high yield varieties. Ordinary black soil selection of the remaining high-yield varieties suitable. Second, the fine preparation of soil to improve the physical and chemical properties of soil degradation of the soil is caused by repeated crop soybean production is a major reduction, the implementation of deep plowing, subsoiling to improve soil water, fertilizer, gas, thermal