Investigation of harmful insects in different crop rotation schemes Dienstag, 19. Februar 2008

The Journal of Agricultural Science Nr. 1(01), pp. 77-81
ХАА-н Шинжлэх Ухаан сэтгүүл №1(01), хуудас 77-81

ÒÀÐÈÌËÛÍ ÑÝËÃÝÝÍ ÄÝÕ ÕªÍªªËÒ ØÀÂÜÆÈÉÍ ÑÓÄÀËÃÀÀ

Á.Ýíõæàðãàë, Ó.Íîðæìàà, Ä.Íàñàíäóëàì, Ë.Äàâàà
ÕÀÀÈÑ, Àãðîáèîëîãèéí Ñóðãóóëü

Õóðààíãóé
Òàðèàëàíãèéí ñèñòåì áîëîâñðîíãóé áîëîí òºðºëæèæ, òåõíèê òåõíîëîãè íü õºãæèõèéí õýðýýð óðãàö áóóðóóëàã÷ õºíººëò îðãàíèçìûí ç¿éëèéí á¿ðýëäýõ¿¿í, òîî õýìæýý, äàñàí çîõèöîõ ÷àäâàð íü óëàì íýìýãäýæ áàéíà. Èéìä ñýëãýýí äýõü õîðòîí øàâüæèéí òàðõàëò, íÿãòðàë, òîîíû õºäëºë ç¿éã ãàçàð òàðèàëàíãèéí ñèñòåìä ãîëëîõ ¿¿ðýãòýé ýýëæëýí òàðèàëàõ ñèñòåìòýé õîëáîí ñóäëàõ íü àæ àõóéí òºäèéã¿é øèíæëýõ óõààíû ÷óõàë à÷ õîëáîãäîëòîé þì.
Èéìýýñ óðèíøèéí õóâèëáàðóóä õîðòîí øàâüæèä õýðõýí íºëººëæ áàéãààã ñóäàëãààíû àæëûí ãîë çîðèëãîî áîëãîí Òºâ àéìãèéí Áîðíóóð ñóìûí Áîðîî ãîëûí õºíäèéä "Íàðò" ýðäýì øèíæèëãýý, ñóðãàëò ¿éëäâýðëýëèéí òºâèéí óðèíø-áóóäàé-áóóäàé, óðèíø-òºìñ-áóóäàé ãýñýí ñýëãýýíèé õóâèëáàðò ãóðâàí äàâòàëòòàéãààð áàéðëóóëæ, òàðèìëûí ñýëãýý á¿ð äýõ øàâüæèéí ç¿éëèéí á¿ðýëäýõ¿¿í, òàðõàëò, íÿãòðàëûã ø¿¿ð¿¿ëèéí äàëëàëò, õºðñíèé äýýæ àâàõ áîëîí áîðòîãî ñóóëãàõ àðãààð óðãàìàë óðãàëòûí õóãàöààíû òóðøèä áóþó 5-ð ñàðààñ 10-ð ñàð õ¿ðòýë ã¿éöýòãýëýý. Õàãàëñàí óðèíø äàõü áóóäàéí õîðòîí øàâüæ, õàâñàí óðèíø äàõü òºìñíèé õîðòîí øàâüæèéí òîî óðèíøèéí áóñàä õóâèëáàðààñ ºíäºð áàéãàà íü ýäãýýð óðèíøèä ÷èéãèéí õàíãàìæ ñàéí áàéäàãòàé õîëáîîòîéã òîãòîîëîî.

Ò¿ëõ¿¿ð ¿ã
ýýëæëýí òàðèàëàõ ñèñòåì, õîðòîí øàâüæ, óðèíø

Abstract
Improvement and diversification crop production system, followed by progresses of machinery and technology result in enhancements of species compositions, numbers and resistances of various harmful pests causing the crop yields. Therefore, the present study of distributions, density and dynamics of numbers of harmful insects in the replacements in association with recurrent planting way, which plays major role in crop production system is significant not only for economy, but also for the science.
Therefore, focusing on the impacts of fallowing versions on harmful insects, species composition, distribution and density of the insects in each replacements of the crops in such replacement versions as fallow-wheat-wheat and fallow-potato-wheat in 3 replicates at the Research, training and practical center “Nart” in the valley of Boroo river in Bornuur soum of Tov province were investigated by insect secretion trapping, soil sampling and settling cylinders during crop vegetation periods or from May to October, and as a result of the study, greater number of insects of wheat in plowed fallow and number of insects of potato in stitched fallow than other versions is associated with better supply of moisture in these fallows.