优质杂交稻两优2186高产高效综合栽培技术探讨

A comprehensive culture techniques of high yield and efficiency for fine quality hybrid rice Liangyou 2186

运用二次回归旋转组合设计 ,对优质两系稻两优 2 186移栽叶龄 ,插植密度 ,施 N、 P、 K肥量等 5项农艺措施进行研究。建立产量、净收入与 5项农艺措施的回归模型。分析了农艺措施对产量和净收入的影响。结果表明 ,对产量的作用主要是叶龄和施 N量 ,对净收入的作用主要是叶龄和施 P、 K肥量。并经微机模拟筛选和综合分析 ,两优 2 186作为单季稻栽培时 ,其高产高效的栽培技术措施是 :4 .0～ 4 .5叶移栽、每公顷插 2 4 .0～ 2 5 .5万丛、施纯 N 12 0～ 135 kg、 P2 O536 .0～ 6 9.8kg、 K2 O 6 7.5～ 113.

A comprehensive culture techniques for fine quality two\|line hybrid rice Liangyou 2186 was studied by the method of quadratic regression rotation design Five influential elements for the culture techniques were leaf age in transplanting( x 1),planting density( x 2),quantities of nitrogen( x 3),phosphorus( x 4)and potassium( x 5).The regression models of five elements with yield,net revenue were established.The results showed that main agronomic practices for yield were leaf age and nitrogen amount,and those for net revenue were leaf age, phosphorus and potassium amount.After simulated screening and optimal selection by computer and synthetical analysis, the comprehensive culture techniques of high yield and efficiency were 4 0-4 5 leaves for transplanting ,as 240000-255000 hills per hm 2, 120-135 kg N per hm 2, 36 0-69 8 kg P 2O 5 and 67 5-113 7 kg K 2O per hm 2