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改革农业耕作制度,增加复种指数,提高土地利用率和劳动效力,是增产粮食,促进农业大上快上的措施.早造杂优高留禾头再生稻的栽培,为一年三稻摸索了一条新途径.1977年,高要县利用杂交水稻高留禾头再生面积2349.3亩,分布在山区、平原和丘陵地区各类型稻田,大面积亩产174斤,部分面积亩产200多斤,小面积亩产300多斤.一、高留禾头再生稻的价值和意义再生稻有两种处理的栽培方式:一种是早造收割时低留禾头(0～3厘米),长出再生分蘖苗,全生育期85天左右,比早造缩短1/3生育时间;另一种是早造收割时高留禾头(40～50厘米)长出再生分蘖苗,全生育期42天左右,比早造缩短2/3生育时间.只要合理安排布局,利用早造收割后至晚造插秧之间的短促
Reforming agricultural farming system, increasing the index of multiple cropping, and improving land utilization and labor efficiency are measures to increase grain output and promote agricultural development. Earlier, A new way.In 1977, the use of hybrid rice in Gaoyao high head Wo regenerative area of 2349.3 acres, located in the mountains, plains and hilly areas of various types of paddy fields, large-area mu produce 174 pounds, some area 200 mu per mu, small An area of 300 kilos per mu yield. First, keep the head and then ratoon rice value and significance of ratooning rice cultivation there are two ways: one is early harvest harvest Wo head (0 to 3 cm), grow regeneration The tillering seedlings, the whole growth period of about 85 days, shorter than the early creation of 1/3 of the reproductive time; the other is the early harvest when the high head to keep the head (40 ~ 50 cm) grow up tillering seedlings, the whole growth period of about 42 days , Shortened by two-thirds of the birth time than the earlier ones.As long as the layout is reasonably arranged, the use of short harvest between early harvesting and transplanting