紅花草(即紫云英Astragalus sinicus)是我省沿江地区群众习慣种植的水稻主要綠肥;由于具有种植容易、就地施用、花工少、肥效大、并能提高土壤肥力等优点,深受群众欢迎,因而种植面积也較大。但近年来因某种原因鮮草产量不高,直接影响水稻的稳定增产。因此,如何提高紅花草鮮草产量,也就成为目前提高粮食产量的一个关鍵。这里,特根据蕪湖专区农科所历年来有关試驗及調查資料,結合外地經驗,对提高紅花草单位面积鮮草产量提些意見。一、选用高产迟熟品种紅花草的品种一般根据开花期的早晚,分为早、中、晚熟种三种。早熟种一般叶小、株矮、茎細,現蕾开花早,种子成熟不一致;晚熟种叶大、株高、茎粗,現蕾开花迟、开花期长,种子成熟較一致,鮮草产量也較高;而中熟种性状则介于早、晚熟种之間。据蕪 Safflower grass (Astragalus sinicus) is the main green manure rice planted by the masses along the Yangtze River in our province. Due to its advantages of easy planting, on-site application, less flowering, large fertilizer effect and improved soil fertility, Welcome, so planted area is also larger. However, in recent years, fresh grass yield is not high for some reason, which directly affects the stable yield increase of rice. Therefore, how to improve the yield of safflower grass has also become a key issue for raising grain yield. Here, special according to Wuhu Prefecture Agricultural Science and Technology over the years of the relevant experimental and survey data, combined with field experience, to improve the yield per unit area of ​​fresh flowers put some comments. First, the selection of high-yielding varieties of late-flowering Crocus generally based on the flowering period of morning and evening, divided into early, middle and late-maturing species three. Early maturity of the general leaves small, short stalks, thin stems, early flowering buds, mature seeds are inconsistent; late-mature leaves large, plant height, stem diameter, flowering late blooming, seed ripening more consistent, fresh grass yield Higher; while the maturity traits are between early and late varieties. According to Wu