“美洲星”在水稻上的使用方法及效果

“美洲星”(原“世纪星”)液肥是安徽省农科院从美国引进有机矿化技术生产的新型液肥。该产品含有KOM、氮、磷、钾、钙、镁、硫、铜、锌、铁、硼、锰、钼、硅以及氨基酸、腐殖胶等成分,在水稻上使用,有明显的增产增效作用。

Effect of Extreme Natural High Temperature on Seed Setting Rate of Rice(Oryza sativa L.) at Heading and Flowering Stage

The seed setting rates of total 198 rice cultivars （lines） at heading and flowering stage were investigated under the condition of extreme natural high tem- perature in 2013 so as to analyze the effect of extreme natural high temperature on seed setting rate of different rice cultivar （line）. The results showed that the contin- uous high temperature showed certain effects on the seed setting rates of tested materials, and significant differences were shown in seed setting rate among differ- ent rice cultivars （lines）. The seed setting rates differed significantly among indica F1 hybrids derived from different sterile and restorer lines, indicating that the sterile and restorer lines had great effects on heat tolerances of different F~ hybrids. The cor- relation analysis showed that the seed setting rates of conventional indica restorer lines and conventional japonica rice cultivars （lines） were negatively related to the daily highest temperature （P〉0.05）, and the seed setting rates of indica F1 hybrids were positively related to the seed setting rates of their restorer lines. Total four in- dica restorer lines, including Ninghuiguangkangzhan, Shuhui 527, Chenghui 3203 and Xianyin-8, and four new japonica rice cultivars （lines）, including Wuyinjinghui （B2）, Nanjing 4//W3660/Nanjing 44 （B12） and Wuyun 2330/JD6011 （B22） were pre- liminarily screened, and their seed setting rates were all close to the normal level （90%）. The screened rice cultivars （lines） showed higher heat tolerances.

Study on the Agroclimatic Division of Thermosensitive Genetic Male Sterility Rice Breeding

Using the meteorological data and geographical information during January-March（1961-2010） accumulated by 18 stations of Hainan,a suitability zoning map for thermo-sensitive genetic male sterility（TGMS） rice was made by GIS technology based on temperature indicators required by TGMS rice during fertility sensitive period and heading-flowering period,aiming to provide reasonable layout and scientific basis for sustainable development of TGMS rice in Hainan Island under the background of global warming.The results indicated that the suitable planting zones covered the south regions of Wuzhishan,Jianfengling and Diaoluoshan;subordinate suitable zones expanded northward to central parts of Wuzhishan,Dongfang,Changjiang,Qiongzhong and southern parts of Wanning;the other regions were unsuitable for breeding.

康县的山和水

甘肃康县东邻陕西,南接四川,是一个地处陇南边陲的山区小县。然而,这里的山水却是钟灵毓秀,名闻遐迩。当我们的旅行乍从天水南下,一进入康县地界就感受到山与水融、水与山相偕的天然意境。 首先映入眼帘的是平落河边的明月山,江望公路就顺着山势溯流而上,山脚下有平乐道古城遗址。山腰西南有康县八景之一的“天沟瀑布”,两边的千丈悬崖像竖着打开的巨型画册,绝壁的岩面纹路横斜,五彩斑斓,所以这条以悬崖形成的山沟有个美丽的名字,叫花岩沟。