镇稻4号的特征特性及高产栽培技术

镇稻４号集优质、高产、抗病于一体，是一个既适于单、双兼用，又适于常规播栽和直播、抛秧等多种形式栽培的迟熟中粳稻新品种。该品种１９９１～１９９４连续４ａ参加江苏省、镇江市中粳稻区域试验和联合鉴定，结果比对照种盐粳２号和泗稻九号增产均达极显著水平，１９９６年参加江苏省中粳稻抛秧栽培生产试验，平均产量８１４３．５ｋｇ／ｈｍ２，比对照武育粳３号增产３．０８％，位居３个参试品种（系）的首位。大面积作一季中稻栽培，一般产量８２５０ｋｇ／ｈｍ２，最高产量１０５００ｋｇ／ｈｍ２以上。作玉米、瓜豆等后季稻种植，一般产量６７５０ｋｇ／ｈｍ２，最高产量８２５０ｋｇ／ｈｍ２以上。品质优，主要指标达部颁优质米标准，米饭清香，冷热软润，适口性好。抗白叶枯病、稻瘟病、纹枯病及其他病害的发病均较轻。全生育期较短，易脱粒，好栽培，作一季中稻栽培，全生育期１４５～１５０ｄ，每公顷有效穗３７５～４２０万，每穗１００粒，结实率９０％以上，千粒重２６ｇ，株高９０ｃｍ左右，耐肥抗倒。作后季稻生长期一般１２５～１３０ｄ。在淮北、淮南、沿江及苏南北部地区，可用作一季中稻栽培，在沿江，苏南及相应地区用作玉米、瓜豆等后季稻种植，表现也比较突出。

Characteristics and High-Yield Cultural Techniques of Rice Variety Zhendao No.4

New rice variely-Zhendao No.4 was bred by Zhenjiang Institute of Agricultural Science,and registered by the commitee of Jiangsu crop cultivars examination and approval in April,1997.Zhendao No.4 was a new late mature middle-japonica rice cultivar with high-yield, good-quality and resistance to diseases. The yield was 8 250￣9 750kg/hm 2,and the potential yield can reach more than 10 500kg/hm 2.It can be used as single season rice and later season rice in double season rice region.It may be adopted in general transplantation,direct sowing culture and scattering-transplantation.