3) the corn belt
产玉米区
4) corn yield
玉米产量
1.
Effect of long-term K application on corn yield and potassium forms in plough layer of black soil and meadow soil in northeast of China;
东北地区黑土、草甸土长期施钾对玉米产量及耕层土钾素形态的影响
2.
Effect of combination of thiourea and inhibitors on soil urea-Ntransformation and corn yield;
硫脲及抑制剂组合对土壤尿素氮转化和玉米产量的影响
3.
Effect of deep loosening cultivation on soil nutrients and corn yield in semiarid region of Western Liaoning Province
辽西半干旱地区深松中耕对土壤养分及玉米产量的影响
5) maize yield
玉米产量
1.
Effects of long-term nitrogen,phosphorus and potassium fertilizer applications on maize yield and soil fertility;
长期施氮、磷、钾化肥对玉米产量及土壤肥力的影响
2.
Effects of water and nutrient interaction on maize yields in lower reach of Liaohe River Plain;
下辽河平原水肥交互作用及对玉米产量的影响
3.
Experimental study on the influence of variable rate fertilization on maize yield and soil nutrients;
变量施肥对玉米产量及土壤养分影响的试验
6) the regional insurance
区域保险
1.
In order to promote the harmonious development of the regional insurance,the paper introduces the index of insurance performance,makes the deeper and objective analysis and evaluation for the performance of insurance development in various provinces and cities and explores the differences in regional insurance.
我国区域保险发展不均衡,存在差异是一个不争的事实。
补充资料：玉米雹灾保险
玉米雹灾保险
I玉米毯灾保险】以国营、集体农场和个人种植的玉米为保险对象，在保险期限内玉米遭受雹灾造成绝产和减产损失由保险公司赔偿的保险。保险金额以实播亩数计算，规定最高保险金额。保险期限，从签发保单时起至玉米成熟开始收割为止。玉米遭受雹灾后赔偿办法是:6月20日前损失1成以上(包括1成)为免赔额，损失2一7成按保险金额的10一50%赔偿，损失7成以上至全损按保险金额oo%赔偿;在7月20日前损失1一7成，按保险的7一oo%赔偿，损失7成以上至全损按保险金额的so%赔偿;在7月21日以后遭受雹灾，按实际损失成数赔偿。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条