The field experiments were carried out by the'3414'optimum best regression design,equations of fertilizer response functions were obtained,and the best N,P and K fertilization quantity in the theory was educed.The optimal quantity of nitrogen,phosphorus and kalium were 200 kg/hm2,91 kg/hm2 and 120 kg/hm2 respectively,and the optimal yield was 8 786 kg/hm2.Synthetically analyzing recommended fertilization quantity in different fertilization method,combining the fact of local agricultural production,the recommended fertilization quantity of nitrogen,phosphorus and kalium were 200 kg/hm2,40 kg/hm2 and 120 kg/hm2 respectively.

The field experiments were carried out by the '3414' optimum best regression design, equations of fertilizer response functions were obtained, and the best N, P and K fertilization quantity in the theory was educed. The optimal quantity of nitrogen, phosphorus and kalium were 200 kg/hm^2, 91 kg/hm^2 and 120 kg/hm^2 respectively, and the optimal yield was 8 786 kg/hm^2. Synthetically analyzing recommended fertilization quantity in different fertilization method, combining the fact of local agricultural production, the recommended fertilization quantity of nitrogen, phosphorus and kalium were 200 kg/hm^2, 40 kg/hm^2 and 120 kg/hm^2 respectively.

本试验通过对水稻使用配方施肥与习惯施肥的对比分析,结果表明两者存在较大差异,使用配方施肥虽然成本略有提高,但增产增收效果好,适宜在当地推广。

2003年7月底8月初遭遇持续高温天气,大面积中稻因热害而减产,但各品种减产的幅度不同,同一品种在不同的栽培条件下受灾的程度也不一样.通过调查认为,中稻避免高温热害的主要措施是选择耐高温品种和确定适宜播种期.

水稻免耕是一项节本增效的轻型栽培技术,笔者在中稻上示范应用6.67 hm2,取得了初步成功,制订了技术规程,进行了典型调查和效益分析,对生产上出现的问题提出了解决方法.