容县水稻稻草还田免耕抛秧栽培试验初报

A Preliminary Report on the Cultivation Experiments of Returning Rice Straw Back to Paddy Field and Till-Less with Seedlings Throwing in Rong County

对比试验结果 2 0 0 2年早造稻草还田免耕抛秧栽培平均亩产稻谷 5 2 1 2公斤 ,稻草不还田免耕抛秧栽培平均亩产稻谷 5 1 4 4公斤。常规翻耕抛秧栽培平均亩产稻谷 488.3公斤 ,稻草还田免耕分别比稻草不还田免耕和常规翻耕亩增产稻谷 3 2 9公斤和 6 8公斤 ,增长 6 74%和 1 .3 2 %。观察结果表明 ,稻草还田免耕抛秧栽具有生根快 ,根系发达 ,分蘖早、茎杆粗壮 ,抗倒伏和成穗率高等优点。

The results of the contrast experiments were as follows:In 2002,the average rice output of the early rice was 521.2kg/mu under the treatment of returning rice straw back to the field and till-less with seedlings throwing.The average rice output was 514.4kg/mu under the treatment of only till-less and seedlings throwing.The average rice output was only 488.3kg/mu under normal cultivation of tilling and seedlings throwing.Thus the former increased rice output by 6.8kg and 32.9kg,i.e.1.32% and 6.74% respectively comparing that of the latter two treatments.The observation showed that in the first treatment,the rice roots grew quickly,the rice root system developed well,the tillering stage was earlier,the rice stems were larger and stronger,the lodging resistance was excellent and the percentage of earbearing tiller was high.