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水气平衡栽培不同畦宽对免耕水稻经济性状及产量的影响 总被引:2,自引:0,他引:2
为了探讨不同畦宽对免耕水气平衡栽培水稻性状和产量的影响,2007年早、晚季进行了水稻免耕水气平衡栽培不同畦宽对比试验,试验表明:水稻免耕水气平衡栽培比普通免耕栽培更有利于促进水稻根系生长和分蘖发生,增强根系活力,增加有效分蘖,明显提高水稻产量,早季增产4.1%~6.3%,晚季增产14.7%~17.7%;不同畦宽处理间的产量差异不明显。 相似文献
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研究了不同施肥和耕作方式下强化栽培水稻的生长及氮素利用。结果表明,免耕条件下以尿素 猪粪强化栽培水稻的产量最高,而常耕条件下以单施尿素常规栽培水稻的产量最高,但各处理的产量差异并不显著。无论是免耕还是常耕条件下,单施尿素常规栽培水稻比单施猪粪强化栽培水稻植株积累更多的氮素量,但其氮素稻谷生产效率、氮素收获指数下降。两种耕作方式比较,免耕条件下水稻的氮素运转效率、氮素农艺效率显著高于常耕,但常耕条件下的氮素回收效率比免耕的高127.95%,差异显著。 相似文献
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本试验采用稻草覆盖免耕栽培、常耕地膜覆盖栽培、常耕栽培等方法对马铃薯进行小区试验,以筛选出经济有效、操作简便、增产增收效果较好的栽培模式供我地马铃薯大面积推广应用.结果表明:以稻草覆盖免耕大畦种植、畦面积宽150cm、每畦种植4行的处理增产效果最好,生长发育、经济性状、经济效益等均优于其它处理. 相似文献
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以金优253为材料进行盆栽试验,并测定水稻在免耕、常耕、分根栽培三种栽培条件下水稻根系SOD,CAT,POD活性和MDA含量.结果表明:免耕栽培水稻根系或分根栽培中免耕侧根系的SOD,CAT,POD酶活性在拔节期比常耕栽培水稻根系或分根栽培中常耕侧根系活性低,其MDA含量较高.相反,免耕栽培水稻根系或分根栽培中免耕侧根系的SOD,CAT,POD活性在灌浆期比常耕栽培水稻根系或分根栽培中常耕侧根系活性高,其MDA含量较低.免耕栽培水稻根系后期衰老较常耕栽培水稻根系慢. 相似文献
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The field survey results of developing the technology for the safflower cultivation in ameliorated rice agricultural landscapes in Sarpa Lowlands, which can provide both the rational use of moisture reserves after the rice cultivation and the oilseed crop yield of 1.0–1.5 t/ha have been reported. The regulations of the production process and the yield improvement in the safflower-adapted varieties used at different seeding rates and row spacing widths have been studied. The optimun agrocenosis structure is determined to realize the productive potential capacity of the safflower varieties in the rice crop rotations with the use of residual moisture reserves after the rice cultivation. The highest oilseed crop yields can be achieved with the use of the seeding rates at 350000 and 400000 units/ha and the row spacing width of 15 cm; they comprised 1.19–1.61, 1.15–1.47, and 1.32–1.78 t/ha for the varieties Astrakhan 747, Kamyshin 73, and Zavolzhskii 1, respectively. It was ascertained that the greatest leaf surface area in the sufflower varieties was formed during the flowering phase; it averaged 19800–28600 m2/ha for all the varieties over the years of the surveys. The analysis of the economic efficiency has proven the feasibility of the safflower production in the Sarpa Lowland rice crop rotations. 相似文献
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冬种免耕马铃薯栽培小气候变化及最佳播种期气象依据探讨试验 总被引:3,自引:0,他引:3
为探讨冬种马铃薯最佳播种期,进行冬种免耕马铃薯栽培小气候变化及最佳播种期试验,结果表明:冬季马铃薯栽培,在允许的时间范围内,以11月10日前后播种最佳,稻草覆盖栽培以其卓越的保温保湿以及平衡气温的功能产量表现最为突出。 相似文献
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马铃薯稻草包芯栽培技术是福建省主推的马铃薯高产栽培技术。为进一步探讨冬种马铃薯稻草包芯栽培技术的增产增收效果,2008年冬至2009年春通过设立不同栽培技术的对比试验,应用回归分析和通径分析方法,对影响马铃薯产量的因素进行研究。结果表明,马铃薯大薯重对产量影响极显著、中薯重对产量影响显著;与常规栽培相比,稻草包芯栽培技术能显著提高马铃薯中、大薯重,进而极显著提高产量,产量增15.4%,产值增15.4%,利润增18.0%,其抗晚疫病能力也较强。 相似文献
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水稻水气平衡栽培法的研究 总被引:11,自引:3,他引:8
为使水稻各生育期田间达到水气养分平衡,优化水稻生长环境,促进水稻根系生长,进而提高水稻产量,研究一种新的稻田节能减排栽培法。2003-2007年在不同的区域对水稻水气平衡栽培技术进行了系统试验研究,结果表明,水气平衡栽培法(RCWAE)处理的水稻分蘖数提高8%-15%,总根数、白根数、根长、根干重分别提高10%-30%、40%-100%、5%-10%、10%-40%;有效穗、成穗率、穗粒数、结实率、千粒重、产量分别提高7.5%、4.9%、3.8%、4.3%、2.3%、5%-10%,节约用水60.0%以上。 相似文献
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马铃薯稻草覆盖免耕栽培不同盖草方法比较试验 总被引:10,自引:3,他引:10
采用沟土铺底抓土盖种盖草、抓土盖种盖草沟土铺面和抓土盖种条盖草沟土铺面免耕栽培马铃薯,结果表明:稻草覆盖免耕栽培比常规翻耕栽培出苗齐,出苗快4~7d,成苗率提高2.1%~4.5%,分枝期提早7~9d,分枝多2个,生长势强,生长期延长6~9d,单株结薯多0.5~0.7个,单株薯重增加34.5%~48.8%,增产30.5%~47.1%,达极显著水平;3种盖草方法间的产量差异不显著,但以抓土盖种盖草沟土铺面产量最高,采用不同盖草方法对薯块大小影响不大。 相似文献
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Simplified cultivation technologies for rice have become increasingly attractive in recent years in China because of their social, economical and environmental benefits. To date, several simplified cultivation technologies, such as conventional tillage and seedling throwing (CTST), conventional tillage and direct seeding (CTDS), no-tillage and seedling throwing (NTST), no-tillage and direct seeding (NTDS) and no-tillage and transplanting (NTTP), have been developed in China. Most studies have shown that rice grown under each of these simplified cultivation technologies can produce a grain yield equal to or higher than traditional cultivation (conventional tillage and transplanting). Studies that have described the influences of agronomic practices on yield formation of rice under simplified cultivation have demonstrated that optimizing agronomy practices would increase the efficiencies of simplified cultivation systems. Further research is needed to optimize the management strategies for CTST, CTDS and NTST rice which have developed quickly in recent years, to strengthen basic research for those simplified cultivation technologies that are rarely used at present (such as NTTP and NTDS), to select and breed cultivars suitable for simplified cultivation and to compare the practicability and effectiveness of different simplified cultivation technologies in different rice production regions. 相似文献