摘要
为了解决由于棉花长期连作带来的种种弊端,主要通过在连作棉田上进行春小麦复播绿肥(草木樨、油菜、油葵、大豆)试验,研究各种绿肥生物量,养分含量及其绿肥翻压后对棉田土壤有机质,速效养分的影响,来筛选出适应棉田轮作倒茬的最佳绿肥种类。研究结果表明:4种绿肥中草木樨的生物量最高;4种绿肥翻压后对土壤有机质和速效养分含量均有一定的影响,其中草木樨、大豆翻压后土壤有机质分别提高了8.58%,1.01%;4种绿肥翻压后土壤速效氮提高了0.30%～5.96%,除大豆外,其他3个处理的土壤速效钾含量平均是对照的1.08倍;研究发现油葵、油菜的富钾作用较为突出。4个处理中春小麦复播草木樨是相对较好的一组轮作作物。
In order to resolve the various defects, we did this experiment to choose the best green manure in intercropping and rotating in the cotton crop. This experiment was about spring wheat and green manure （Melilotus suaveolens, rape, oil sun flowers, soybean） on the continuous cropping cotton fields, studied their biomass, plant nutrient content and the effect of green manure application on soil nutrients in cotton fields. The results showed that： biomass in the Melilotus suaveolens was the highest in four green manure; after pressed four green manure in the Green the cotton fields, soil organic matter, nutrients were available certain influence; after Melilotus suaveolens and soybean pressed in the soil, organic matter increased by 8.58% and 1.01%; four green manure pressed in the soil available nitrogen increased by 0.30%-5.96%, except soybean, the soil available potassium of the other three dealt was 1.08 times that of the control; the role of rich potassium in rape and oil sun flowers were even more significant. This experiment researched spring wheat multiple Melilotus suaveolens was a relatively good crop rotation.
出处
《中国农学通报》
CSCD
北大核心
2009年第6期151-154,共4页
Chinese Agricultural Science Bulletin
基金
新疆维吾尔自治区科技厅项目"棉田用养制度关键技术研究与示范"(2001BA507A-10)
农业部公益性行业科研专项"棉花简化种植节本增效生产技术研究与应用"(nyhyzx07-005)
科技部"十一五"支撑计划项目棉花高产优质高效栽培技术研究(2006BAD21B02-1)
关键词
春小麦
绿肥
连作
棉田
土壤肥力
spring wheat, green manure, continuous cropping, cotton fields, soil fertility
