【摘要】 在湖南攸县、双峰进行的田间试验结果表明 ,稻草覆盖免耕结合浅湿灌溉的稻田农业节水栽培配套技术与传统的栽培方法比较 ,能提早和促进水稻分蘖 ,提高水稻根系活力、功能叶叶绿素含量和干物质的积累 ,降低水稻纹枯病的发生 ,晚稻产量达 8790 kg/ hm2 ,增产率达 10 .2 %;同时 ,能提高灌溉水的生产效率 ,节约灌溉用水量 ,晚稻田灌水次数减少 40 %,每公顷节约灌水量 112 3.5 m3、节省水稻生产成本 5 10元、纯收入增加 1437元。更多还原

【Abstract】 Field experiments were carried out in Youxian county and Shuangfeng county in Hunan province simultaneously. Results showed that comprehensive agricultural water-saving system, which consisted of no-tillage, rice straw mulch, and wet-shallow irrigation, may promoted tilling ability and root vigor, increased chlorophyll content of function leaf and dry matter accumulation, and reduced occurring rate of rice sheath blight in paddy rice. Under the new system, rice grain yield was 8790 kg/hm 2, 10.2% higher than those under conventional cultivation methods. The irrigation water application also was reduced 1123.5 m 3/hm 2,about 40% less than those under conventional irrigation. The production cost lowered about 510 yuan/hm 2 and net income increased by 1437 yuan/hm 2 under the new system, compared with those under the conventional cultivation system.更多还原