摘要
应用N-P-Zn三因素五水平回归设计,研究钙质紫色土肥料优化配方与稻麦产量品质的关系。结果表明,水稻每公顷施N150～195公斤,P_2O_5 90～120公斤、ZnSO_4·7H_2O15～22.5公斤,可产稻谷8265～8490公斤;稻米蛋白质含量9.6～10.6%,淀粉含量74.9～76.5%。小麦施N120～165公斤、P_2O_5 75～105公斤,ZnSO_4·7H_2O0～15公斤,可产小麦3300～3720公斤;蛋白质含量11.4～12.6%,淀粉含量61.8～64.5%。应用表明,90%以上达到增产效果。钙质紫色土约有半数缺锌,在稻麦轮作中,可每隔2～3年在水稻上施锌一次,小麦则利用其后效,不施锌肥。
Field experiments with 3 factors(N, P, Zn) 5 levels regression design for optimazing the fertilization combinations of rice and wheat on calcareous Purple soil indicated that: rice fertilized with 150-195 N Kg/ha, 9-120 P_2O_5 Kg/ha and 15-22. 50 ZnSO_47H_2O Kg/ha could yield 8265-8490 Kg/ha of grain with a protein content of 9.6-10.6% and a starch content of 74. 9-76.5%. Wheat fertilized with 120-165 N Kg/ha, 75-105 P_2O_5Kg/ha and 0-15 ZnSO_4·7H_2O Kg/ha could give 3300-3720 Kg/ha of grain containing 11.4-12.6% of protein and 61.8-64.5% of starch. When applied to commercial crop production, the above fertilization showed a yield increase of rice and wheat in most (85%) cases. As about half of the calcareous purple soils are deficient in zinc, the rice crop is recommended to be supplemented with Zn at two to three year intervals in a rice-wheat rotation system, which the wheat crop may benefit from the after effects of the Zn application.
出处
《西南农业大学学报（自然科学版）》
CSCD
1990年第6期541-544,共4页
Journal of Southwest Agricultural University
关键词
水稻
小麦
营养效应
氮磷锌
紫色土
purple soil
fertilizer combinations
lowland rice
triticum aestivum
yield
