摘要
据对浙江杉木一代种子园的土壤、植株针叶和球果抽样测定表明，土壤中水溶性硼含量只有０．１３～０．２４ｐｐｍ，大大低于０．５ｐｐｍ的临界浓度。针叶和球果中有效硼含量也分别只有８，９～２２．７ｐｐｍ和４．１～１６．１ｐｐｍ，也低于正常含量。经四年施硼试验研究结果表明，进入正常结实期的杉木种子园施入一定量的硼肥，其单株和单位面积的球果产量分别比对照平均增产３５．０８％和４８．４２％，出籽率提高９．４０％，发芽率提高１４．９９％，千粒重增加６．５４％。施肥时间以４月中旬和６月中旬以前为佳，每株施６０ｇ硼砂较为适宜。试验结果还表明，硼肥和复合肥配比混施增产效果更加明显，单株和单位面积球果产量分别比单施复合肥和硼肥增产２２．５５％和１５．７１％以上，种子品质也有显著提高。
The samples of soil and plant's needle,cone taken from Zhejiang's Chinese firseed
orchards were tested,And the results showed that the content of water-soluble B in soilis only
0.13～0.24 ppm,which is obviously lower than the critical concentration of 0.5 ppm.The B
contents of plant needle and cone are only8.9～22.7 ppm and 4.1～16.1 ppm
respec-tively,which is also lower than the normal one. Applying appropriate amount of B to
Chinesefir seed orchard, the cone yields of single tree and per hectare stand are averaged
35.08%,48.42%higher than those of the control respectively,the seed output rate is 9.40%,the
ger-mination percentage is 14.99%and the 1000-seed-weight is 6.54%,which is higher than
thatof the control. The best time for fertilization is likely to be before middle August and
middleJune. The proper amount of fertilizer used is 60 g borax generally. The study also
revealedthat the better yield could be achieved to apply B mixed with N,P,K fertilizers instead
of Bor N,P, K mixed fertilizer seperately. The amount of cone of single tree and per hectare
standcan be increased by 22.55%and 15.71%more with the compound fertilizer,and the
seedquality could also be improved remarkably.
出处
《林业科学研究》
CSCD
北大核心
1995年第6期634-640,共7页
Forest Research
基金
"八五"国家科技攻关项目
浙江省"八五"重点项目
关键词
杉木
种子园
有效硼含量
硼
施肥
Chinese fir seed orchard,available
B content,test to fertilize B,cone yield,seed quality
