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七十年代,世界上已有不少国家采用免耕法或少耕法。美国面积已达3900万英亩,英国,也很重视这种耕作法。伊朗、日本,马来西亚,印尼、斯里兰卡,菲律宾等国正在稻田试验推广免耕法。免耕法在新疆、云南、四川、江苏、浙江等省也在试验推广之中。而再生稻我国南方稻区曾有试验,我省松溪县早在1975年就先后收集了500多个国内外水稻良种,进行了再生能力与品种、留头高度、环境因素关系的试验研究,试验结果表明:只要选择再生能力强,再生期长,留头低,早季播种适时,育秧方式采用铲秧以及得当的水肥管理措施,其再生稻产量就跟上季产量相差不多,或略超过,如科梅品种(籼稻),上季产量每亩为424公斤,而再生稻产量达482公斤。
Seventies, many countries in the world have adopted no-till or less tillage. The United States has an area of 39 million acres, the United Kingdom, also attaches great importance to this farming method. Countries like Iran, Japan, Malaysia, Indonesia, Sri Lanka and the Philippines are promoting tillage-free farming in paddy fields. Tillage is also under way in Xinjiang, Yunnan, Sichuan, Jiangsu and Zhejiang provinces. Regeneration rice in southern China has been experimenting with rice in our province Songxi County as early as 1975, has collected more than 500 domestic and foreign rice varieties, the regeneration capacity and variety, head height, the relationship between environmental factors experimental study, The results showed that the yield of ratooning rice was almost the same as that of the previous season or as long as the selection of high regeneration ability, long regeneration period, low head retention, timely sowing in early season, shoveling and appropriate fertilizer and water management measures , Such as Kemei varieties (indica rice), the previous quarter yield of 424 kg per acre, and ratoon rice production reached 482 kg.