小学“栽培式”习作教学生态模式的构建

"栽培式"习作教学是以学生的发展为中心的,让学生自由地学习写作,自主地作文;教师给学生提供广阔、宽松的写作土壤,以及促进学生自主写作的氛围。"栽培式"习作教学生态模式是由教师、学生、群体、生活和环境五个方面构成的。这个生态模式的核心就是学生,教师是为学生的成长服务的,生活是学生汲取营养的源泉,群体是该生态系统中互相影响的同类物种,而该系统的生态环境,同样影响着学生的成长。

Effects of Different Nutrient Management Systems and Cultivation Methods on Crop Yield and Soil Fertility

[Objective] The aim was to provide scientific basis for improving the middle and low yielding fields fertility and farmland productivity. [Method] A field experiment was carried out to study the effects of different management practices （including nutrient management systems and cultivation methods） on crop yield and soil fertility in winter wheat/summer maize rotation system. [Result] The crop yield in the treatment of the high yield and high efficiency system was remarkably higher than farmer conventional management practice. After five crop seasons experiment, the contents of soil organic matter for high yield and high efficiency system increased 2.72-3.01 g/kg, and that of soil total nitrogen increased 0.12-0.16 g/kg, the soil Olsen-P increased 5.2 mg/kg and the soil available K （NH4OAC-K） increased about 37.8 mg/kg. [Conclusion] Considering the yield and soil fertility comprehensively, the management system of high yield and high efficiency could effectively increase the crop yield and improve the soil fertility.

Effects of Six Cultivation Patterns on Occurrence of Major Diseases and Pests and Yield of Rice

The occurrence rules of major diseases and pests in rice were investigated under six cultivation patterns, i.e., mechanical plowing-artificial transplanting, mechanical plowing-mechanical transplanting, mechanical plowing-scattered transplanting,cattle plowing-artificial transplanting, cattle plowing-mechanical transplanting and cattle plowing-scattered transplanting. The results showed that the six cultivation patterns showed small effects on the occurrence of rice sheath blight, second-generation rice planthopper, rice stem borer and rice false smut, but showed great effects on the occurrence of rice leaf folder, third-and fourth-generation rice planthopper and weeds; there were certain differences in the rice yield among different cultivation patterns, and the rice yield under the pattern of mechanical plowing-mechanical transplanting ranked first, while that under the pattern of cattle plowing-scattered transplanting ranked last.

Effects of Different Cultivation Methods on Growth, Yield and Quality of Cassava

The research explored effects of cultivation methods on growth, yield and quality of cassava. The results showed that the mulching treatment by direct seed- ing, the mulching treatment by transplanting, and the exposed treatment by trans- planting performed excellently in bringing seedling stage forward, improving germina- tion rate, yield and quality. For example, seedling emergence stages were 36, 31 and 31 d earlier; germination rates improved by 19.24%, 14.29% and 14.29%; yields grew by 41.98%, 26.72% and 11.45%; starch contents increased by 3.50%, 2.10% and 1.40%, respectively. Therefore, cassava in the mulching treatment by direct seeding is characterized by earlier seedling emergence stage, high germination rate, high yield and quality.

Studies on the Influences of Different Planting Patterns on the Emissions of Methane and Nitrous Oxide in the Paddy Field

This paper monitors the differences of early rice yield and the emissions of methane and nitrous oxide in the paddy field, based on the different cultivation technologies（high-yield scattered-planting mode, transplanting mode, farmer-planting mode）. Results suggested that the rice yield by high-yield scattered-planting mode and transplanting mode was significantly higher than farmer-planting mode, and the increase reached 16.4% and 17.7%. The difference of high-yield scattered-planting mode and transplanting mode was insignificant. The potential contributions of the methane amount by these three patterns to the global contribution were all above90%. The emission of methane during the growth period by the high-yield scatteredplanting mode was dramatically lower than that by transplanting mode and farmerplanting mode, while the differences between the high-yield transplanting mode and the farmer mode were insignificant. The changes of global temperature increase and the emission of methane were the same. The greenhouse gas intensity of high-yield scattered-planting mode was the lowest, and the farmer-planting mode was the highest. Therefore, the scattered-planting with reasonable fertilizing method is the most essential way to realize high yield of rice and the reducing the greenhouse gas emission as well.

Effects of Cultivation Methods on Yield Formation and Photosynthetic Characteristics of Zhuliangyou 4024 and H You 159 as Doublecropping Rice

To explore the high-yield cultivation methods of Zhuliangyou 4024 and H You 159 when planted as double-cropping rice, the effects of two cultivation meth- ods, i.e., seedling broadcasting and transplanting, were studied on SPAD value, photosynthetic rate, grain yield and yield components. The results showed that the seedling broadcasting cultivation was conducive to Zhuliangyou 4024 and H You 159 to obtain higher yield. The higher chlorophyll content and photosynthetic rate and their slower decrease of flag leaf after full heading of the seedling broadcasting cultivation were thought to be the physiological basis of high yield.

Simplified High-yielding Cultivation Technology of Rice

[Objective] The aim was to select simplified high-yielding cultivation technology of rice. [Method] The research explored three methods of farmland prepara- tion, transplanting, and fertilization including shallow rotary tillage and deep ploughing, mechanical transplanting and hand transplanting, controlled-release fertilizer and quantitative fertilization in order to investigate effects of different treatment groups on rice characteristics, economic characteristics, as well as labor saving, yield increasing and profit improving. [Result] Rice increased by 596.4-809.55 kg/hm2, labor saving reached 120-135 per hm2, and profit improved in the range from 5 521.39 to 8 727.48 yuan/hm2 in the treatment groups by combinations of shallow rotary tillage, mechanical transplanting, and controlled-release fertilizer, of shallow rotary tillage, mechanical transplanting, and quantitative fertilization, and of deep ploughing, mechanical transplanting, and controlled release fertilizer. [Conclusion] The three models are of promising prospects in production.

Comparative Study of Rice Morphogenesis with Different Cultivation Methods

[Objective] The aim of this study was to compare the morphological char- acteristics of rice （Oryza sativa L.） with different cultivation methods and investigate the dynamics of organ growth and development characteristics of different rice culti- vars. [Method] Based on continuous field observation and destructive sampling over a growing season, detailed organ morphological data were obtained including leaf length, node number, plant height, tiller number, leaf angle, leaf area and specific leaf weight, to compare organ morphological differences among 4 rice cultivars of Baidao （indica）, Jinnanfeng （japonica）, 9325 （japonica） and 9915 （japonica） with 3 cultivation methods of field planting in Weigang, pot planting in Weigang, and field planting in Jiangpu. [Result] Maximum leaf length of each node gradually increased at the early growth stage and decreased at the later growth stage, the relationship between maximum leaf length and node position can be described by the equations y=a,,-~ and y=ax＋b; node number, growth duration, leaf length and plant height of pot planting rice in Weigang were smaller than that of the other two field planting meth- ods; the relationship between plant height and sunshine duration, plant height and GDD （growing degree days） can be described by the equation y=ax＋b, 19.23 ℃.d of GDD （≥10 ≥-d） and 8.12 h of sunshine duration were required to increase 1 cm of plant height; plant height, tiller number, and leaf area of Baidao were higher than that of the other 3 laponica rice cultivars, but the specific leaf weight and leaf angle were smaller. [Conclusion] Comparison of morphological characteristic differ- ences among rice cultivars is an important way to select water-saving and drought- tolerant rice varieties. In this study, the experimental results can be integrated into a rice functional-architectural model to simulate rice organ growth dynamics in a three- dimensional space, thereby providing reference for selecting water-saving and drought-tolerant rice cultivars.

Effects of Pruning Treatments on Yield and Economic Benefits of Pepper in Greenhouse during Long-season Cultivation

In the Yangtze River region, thepepper long-season cultivation needs oversummer pruning. Inorder to study the effects of different pruning treatments on growth of over-summer grown pepper, three differentpruning treatments were applied to pepper seedlings, such as treatment one（re-growth pruning）, treatment two（four stems） and treatment three（multi-stem pruning） with no pruning as control（CK）.The results showed that themulti-stem pruning treatment enabling the plant to maintain the good plant type for high yield and reduce thevirus disease to improve the marketability of pepper fruits, compared with the other two pruning treatments;andthe yield and economic benefit were increased by 15.8% and 19%, compared with the control, respectively. Ingeneral the multi-stem pruning was the best for over-summer pepper cultivation.

Highly-efficient Stereo-cultivation Model in Kiwifruit Orchards Interplanting Konjak

The kiwifruit orchards with plants growing for over two years were chosen for interplanting of konjak, which takes advantages of complementation of the two plants in terms of habits, reducing water and soil erosions effectively, and decreasing water evaporation, and konjak diseases. Furthermore, the interplanting doubles planting benefits and constitutes a highly-efficient planting model.

Research Progress of High Yield Cultivation Mode of Rice

Optimized high-yielding cultivation is of great significance to ensure stable and high yield of rice in China. This paper reviewed several super high-yielding cultivation modes, analyzed the effects of different cultivation modes on rice agronomic traits and physiological characteristics, and discussed the advances in rice mechanized cultivation and mode. Finally, the future development prospects of rice cultivation were put forward.

Reading Dickens Romantically： ＂Night Walks＂

This paper will examine the essay, ＂Night Walks＂ （2000）, to see how Charles Dickens （1812-1870）, a social-realist writer of the Victorian era, has used elements adapted from the Romantics in order to draw attention to the pitiable social conditions of Victorian London. Dickens＇ the realist paradoxically reflected a readiness to think and feel ＂without immediate external excitement＂. He expressed his alignment with Romanticism by way of a cultivation of feeling and empathizing. His genius was, as expressed by Bagehot, ＂essentially irregular and unsymmetrical＂ because he was ＂utterly deficient in the faculty of reasoning＂. His daily, or rather nightly walks provided him with the inspiration to follow the Romantic tradition of writing on walks. The essay under consideration, ＂Night Walks＂, clearly supports the notion that Romanticism was fallaciously opposed to realism. The paper will examine the ways in which the theme, style, and structure of the essay evoke the preoccupation of a Romantic soul--for whom the walk becomes a space for ＂encounter and reflection＂--and the Romantic mind which is empowered by ＂imaginative self definition or discovery＂.

Systems of Soilless Culture in China

Soilless culture in China has developed rapidly in recent years. The area of soilless culture in China was about 0.1 ha in 1985, 117 ha in 1995, but in 2002 the area reached to 865 ha. This paper introduced the brief history of soilless culture in China, and the main soilless culture systems. The present situation and problems are also discussed in this paper.

The Development of Chinese Cultivation of New Curriculum Reform

Chinese language teaching in new curriculum reform not only inherits and develops the old teaching mode, but also teaches the spirit of Chinese in the curriculum reform and cultivates the students＇ Chinese cultivation. This article mainly deals with the cultivation of Chinese self-restraint under the background of new curriculum reform, according to students＇ self - cultivation, emotion and rational interest.

Sulfosulfuron Persistence in Soil Under Different Cultivation Systems of Wheat(Triticum aestivum)

Many sulfonylurea herbicides have been used under a wide variety of agronomic conditions in numerous crops. An understanding of dissipation rate of herbicide is fundamental for predicting the fate of herbicide in soil. In order to study the sulfosulfuron persistence under different cultivation systems of wheat, a four replicated experiment was carried out in the Hashemabad Reaserch Center of Gorgan, Iran in 2010 in a split plot design with two factors. Cultivation system as the main factor consisted of six levels, including conservation tillage by Combinate, no-tillage by Baldan grain drill, conservation tillage by Chizelpacker, conservation tillage by Delta Model, surface tillage by heavy disk, and conventional tillage by moldboard plow and twice disk. Secondary factor included two levels of sulfosulfuron application(with and without sulfosulfuron). Soil samples were taken at 6 stages and soil microbial respiration and soil pH were measured as factors affecting sulfosulfuron persistence. Results showed the least time of sulfosulfuron persistence belonged to the cultivation system of no-tillage by Baldan grain drill with a half-life of 4.62 d. Then, conservation tillage by Combinate and conventional tillage with a half-life of 6.30 d and conservation tillage by Delta Model with a half-life of 9.90 d were ordered. The most time of sulfosulfuron persistence(11.55 d) was related to conservation tillage by Chizelpacker. Ninety percent reduction of sulfosulfuron concentration occurred 15.34, 20.92, 32.88, and 36.38 d after sulfosulfuron application, respectively, for no-tillage system, conservation tillage by Combinate and conventional tillage, conservation tillage by Delta Model and surface tillage, and conservation tillage by Chizelpacker. In all the cultivation systems, toxicity symptoms were not observed 40 d after spraying sulfosulfuron onto the tomato plants which were used as test plant. Effects of different cultivation systems on soil microbial respiration were also significant.