Rice Variety Screening And Cultivation Techniques In The South Gleyed Paddy Soils

In order to investigate the potential of resistance and fertilization technology in the paddy fields of gleization,the materials included the early and late rice varieties were each19, in2012,in Ningxiang County in Hunan province we conducted a screening test, the materials included the early varieties (Xiangzhaoxian45, Zhongjiazao17) and the late varieties (Tianyouhuazhan, Qianyou930), in2013,in Ningxiang Country were different fertilization (The processing have T1, T2, T3, T4, T5, T6and T6is blank) in field trials. The treatments were arranged in randomized block design with three replications. The trials researchs resistant of gleization, sensitivity of gleization and yield performance of different varieties in the paddy fields of gleization; studying the different of the rice include tiller dynamic, earbearing tiller percentage, leaf area index, dry matter accumulation, yield and Yield composition. The main results are as follows:(1) different varieties have difference in resistant of gleization and sensitivity of gleization in the paddy fields of gleization.In19early rice varieties, Xiangzaoxian3and Zhongjiazao17’s sensitivity is better, but latent anti-poor. Jingyou458and Xiangzaoxian45have strong resistance,but the potential sensitivity is the weaker;in late19rice varieties, Huanghuazhan and Tianyouhuazhan have strong sensitivity in the paddy fields of gleization, Xiangwanxian13have strong anti-gleization in the paddy fields of gleization.(2) the implementation of ridge cultivation in the paddy fields of gleization compared with control, the number of productive ear and the number of grain per ear has increased, increased by percentage of12.8and18.8, yield of rice increased by percentage of37.0.(3) At the tillering stage, we need that less application of the N fertilizer,and Adding K, and using of P fertilizer can promote earbering tiller percentage in the paddy fields of gleization.(4) Increasing the amount of nitrogen and potassium can increase rice yields in the paddy fields of gleization, increasing apply of N and K can effectively improve the rice available spike, at late period of rice growth,with the increase of nitrogen setting rate and1000-grain weight will drop, and emphasis on P, K fertilizer application can effectively improve rice seed rate. (5) In the paddy fields of gleization,, dry matter accumulation of full heading time and mature period contributes to the formation of the rice yield, with the use of three types of fertilizers, can effectively improve the biomass of rice, a single application of fertilizer is not conducive to the formation of biomass, thereby affects the increase of the rice yield.Therefore, screening of some strong resistance, patience and strong varieties is a key technology to improve rice yields in the paddy fields of gleization, and cultivation techniques such as the use of Ridge ridge and so on is also essential to transform the paddy fields of gleization, the idea is to improve the field of culture is important to Improve the yield of rice in the paddy fields of gleization, the effectively use of N, P, K and the reasonable use can effectively improve the yield of rice in the paddy fields of gleization.