But in full panicle stage , k uptake of late rice was less than that of early rice , this situation was obviously related to weather 但在齐穗期晚稻吸钾低于早稻，这一情况明显与气候有关。
In the experiments , soil drainage method was used at shaoxing and deep water method at fuyang for early rice , and soil drainage method was adopted at both sites for late rice 早稻试验在绍兴采用土壤排水，而在富阳采用深厚水层方法，晚稻试验两地都用土壤排水方法。
3 . the investigation about the planting area of main crops in taizhou region indicated that the area for planting early rice rapidly declined , at the same time , the cash crops expanded 3 、通过对台州市几种主要作物种植面积的变化调查，表明在经济作物发展的同时，早稻种植面积下降的比较快。
It was found that potassium uptake in seedling stage for late rice was higher than for early rice , the former occupied 7 . 5 % of total k uptake , the latter only occupied 0 . 3 % , the same situation was observed at maximum tillering stage 已发现苗期晚稻吸钾量高于早稻，晚稻占吸钾总量的7 . 5 % ，早稻仅占0 . 3 % ，最大分蘖期也观察到同样的情形。
The most important factors affected crop yield and economics in these experiments were : rape : population density ; early rice : interaction of p k ; late rice : rate of nitrogen application ; wheat : variety ; midrice . interaction of n k 这些试验中影响作物产量最重要的因素是：油菜：种植密度；早稻：磷钾交互作用；晚稻：氮肥施用量；小麦：品种；中稻：氮钾交互作用。
Field experiments were conducted at shaoxing and fuyang , zhejiang province , using split - split plot design on early rice and split plot design on late rice respectively , to identify the roles of variety , fertilizer and plant population in achieving higher yield 早稻采用裂区-裂区试验设计和晚稻采用裂区试验设计的大田试验在浙江省绍兴和富阳进行，以检验品种、肥料和植株密度在取得高产中的作用。
Comparing with early rice k uptake at seedling and maximum tillering stage in late rice was obviously higher , while k uptake at full heading and ripe stage was lower , so for potassium fertilization of early rice , we should pay attention to both early stage and middle stage 与早稻相比，晚稻在苗期和最大分蘖期明显较高，而齐穗期和成熟期吸钾较低，所以对早稻施钾来说，我们应注重早期和中期施用。
As was proven by the experiment , the average harvest indexes were 0 . 62 for early rice and 0 . 61 for late rice respectively at shaoxing , while 0 . 57 and 0 . 55 for fuyang , this means that a similar rice yield at fuyang would require larger amount of total dry matter production than at shaoxing 试验证明，绍兴早稻和晚稻的平均收获指数分别为0 . 62和0 . 61 ，富阳的分别为0 . 57和0 . 55 ，这意味着同样的水稻产量在富阳需要比在绍兴更大数量的干物质生产。
Abstract : the investigation of summer migration of rice water weevil lissorhoptrus oryzophilus kuschel in double cropping rice area of zhejiang province in 1994 and 1995 indicated that the main cause of its always low population density in second generation is that most of the adults of first generation emigrated from early rice fields for summer and winter hibernation 文摘:研究表明，浙江省双季稻区稻水象甲二代虫量低的首要原因是绝大部分一代成虫迁出早稻田夏蛰并越冬，构成二代虫源的比例极微。
So in order to get good response for hybrid early rice , potassium fertilizer should be applied at early stage , attention should also be paid to middle stage ; for hybrid late rice , k supply in seedling stage and tillering stage should be paid more attention , at middle - late stage certain amount of k should be supplied according to k nutrition 因此为了使杂交早稻有更好的反应，钾肥应在早期施用，中期也应重视钾；对杂交晚稻来说，在苗期和分蘖期应格外注意施钾，在中后期也应根据钾营养状况施用一定量钾。
