旱地免耕机直播技术在水稻上的适应性试验

2006年进行旱地免耕机直播技术在水稻上的适应性试验。结果表明,旱地免耕机直播技术在秸秆覆盖田块同样适用。在用种量56.25 kg/hm2下,免耕机直播仍可获水稻产量9.390 t/hm2,比常规移栽对照增产3.99%,减少支出1 320元/hm2,增加纯收益2 070元/hm2,产投比提高0.91。

油菜免耕直播联合播种机抛土性能研究

建立了油菜免耕直播联合播种机开沟器旋耕刀片运动学模型,研究了土粒在开沟刀片上运动的动力学特性,采用Matlab软件对旋耕开沟机优化仿真试验和田间抛土试验进行验证,弯折半径为0.21～0.23 m、刀盘转速为245 r/min、土粒质点在0.04 s离开正切面时的相对速度为4.5～6 m/s,这一范围内具有最佳的抛土性能,最大抛土距离为0.968～1.024 m。

油菜轻简化栽培免耕直播机开沟覆盖技术研究

经过2年来的试验示范表明,油菜轻简化栽培免耕直播机开沟覆盖技术能获得稳产、高产、省工,并能节本和减轻劳动强度,值得推广应用。

双低油菜免耕直播机开沟不同栽培密度试验

对机开沟免耕直播油菜产量与田间密度的关系进行统计分析,结果表明:不同田间密度油菜产量差异达到极显著水平,其中田间密度为16.20万株/hm2时,产量最高,单位面积经济效益最好,投入与产出比最高,为最佳收益点。

江苏省夏玉米板茬机直播栽培技术

随着玉米轻简化栽培技术的发展，小麦秸秆全量还田，结合玉米免耕机械直播，可合理增加种植密度、带足基肥、抢墒播种、保墒出苗，保证足苗、齐苗、匀苗和壮苗，同时解决劳力不足问题。

Effects of Organic Fertilizer Application Amount on Seedling Quality under No-tillage Semi-Solid State Direct Seeding

With early rice variety Zhongzao 39 as test material,this paper investigated the effects of organic fertilizer application rate on seedling quality under no-tillage semi-solid state direct seeding.The results showed that the seedling quality of no-tillage semi-solid direct seeding was better than that of traditional direct seeding,and different application rates of organic fertilizer under no-tillage semi-solid direct seeding also had signi ficant effects on seedling emergence rate,dry matter weight in ground and underground,stem base width,root activity,chlorophyll content and seedling growth index of rice seedlings.When the organic fertilizer dosage was A4(0.10∶1),it was most beneficial to the growth and development of rice seedlings under no-tillage semi-solid state direct seeding,it could effectively improve the quality of rice seedlings and enhance their resistances,the cultivated seedlings could lay a good foundation for high yield of rice in late stage.