摘要
在少雨干旱地区 ,旱地甘蔗改沟植为穴植 ,可有效地拦集自然降雨 ,施肥集中于种植穴内 ,能改善土壤的蓄水保肥能力 ,提高甘蔗产量。试验表明 ,0～ 2 0cm土层的水分含量提高 0 6 6～1 90个百分点。施肥水平相同的条件下 ,穴植土壤肥力高于沟植 ,增加有机质 0 5 6 %、速效氮17 0 1mg/kg、速效磷 2 6 3mg/kg、速效钾 3 98mg/kg ,增产甘蔗 2 1 8t/hm2 ,蓄水保肥增产效果显著。
In arid region,changing the sugarcane planting technique from furrow to hole,rainwater and fertilizer will be retained,the ability of water and fertilizer reservation of soil will be improved and sugarcane yield increased.The study showed that compared hole planting to traditional furrow planting,the moisture of soil layer in 0 20?cm increased by 0 66-1 90 percentage point.Meanwhile,under the same fertilizer applying level,the organic matter,available N,avaiable P,avaiable K,and yield of sugarcane increased by 0 56%,17 0?mg/kg,2 63?mg/kg,3 98?mg/kg and 21 8?t/hm 2,respectively.The advantage of hole planting was significant.
出处
《西南农业学报》
CSCD
2002年第1期38-40,共3页
Southwest China Journal of Agricultural Sciences
基金
云南省"八五"科技攻关项目
云南省科委"九五"重点农业科技推广项目
