杂交水稻谷优明占高产栽培技术研究

Techniques for Cultivation of High Yield Hybrid Rice,Guyoumingzhan

运用均匀设计，以杂交水稻谷优明占为材料，分析不同秧龄、密度和纯N量对产量的影响，建立产量与3项栽培措施的回归模型。结果表明，3项措施均对谷优明占的产量有影响。经微机模拟筛选，秧龄25.4～29.7 d、插植密度30.1万～33.2万丛＆#183; hm -2、施纯 N量183.8～210.0 kg ＆#183; hm -2是谷优明占产量达到8250 kg ＆#183; hm -2以上的高产栽培技术措施。

Uniform design was used to analyze the cultivation of the high yield ,hybrid rice ,Guyoumingzhan ,based on three factors ：seedling age （X1 ） ,planting density （X2 ） and quantity of nitrogen （X3 ） . The regression models for the three factors affecting the rice yield were established . The experimental results revealed that the three factors exerted significant influences on the yield , After a simulated screening and optimization by computer , seedling age in the range of 25.4-29.7 d for transplanting at the density of 301 000-332 000 hills ＆#183; hm-2 with a nitrogen application of 183.8-210.0 kg ＆#183; hm -2 was recommended for the cultivation on yield ≥ 8 250 kg ＆#183; hm-2 .