杂交水稻“春制—晚杂—油菜”三熟高产栽培配套技术研究

Studies on the Cultural Techniques for A Triple-cropping System Including Hybrid Rice

杂交水稻春季制种与晚杂、油菜连作这一新型耕作制度，以合理搭配三熟高产品种（组合）为前提，合理安排播插期，利用三熟作物重叠生育期，采用一系列配套新技术，实现三熟作物同步高产，达到高产高效的目的。

The triple-cropping system including hybrid rice seed production （late Marlate July）, hybrid rice production （late Junelate Oct. ） and rape （mid Sep- May） is a new cropping system which is widly adaptable in the area of the middle and lower reaches of Yangtze River. The main points of the cultural technktues for this cropping system are： ① Choice of high yielding varieties （or combinations ） for each cropping. For hybrid rice seed production, early-（or medium-） maturing combinations are appropriate, for example, V20A × Ce 48-2 （early） or V20A × Ce 64-7 （medium）; it is proper to choose medium-maturing combinations such as Weiyou 64,Changyou 64 etc.for late hybrid rice production; and for rape, the varieties like＂Zhongyou 821＂with high yielding alility,strong resistance and a litlle bit early medium-maturity are most suitable.②Rationally-arranging seeding and tramplanting time for each cropping to scientifically take advantage of the overlapping growth period,③Other neoessary cultural management for each crop.