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Mango leaf cutting weevil survival and the relationship between soil type and moisture content

Cut the leaves at noon-day, after more moisture. 6. Law of feeding, breeding from the egg will begin to put the eggs in the laboratory rearing cage rearing, water regularly every day to keep the original settings with disabilities soil moisture content. 1.2 Observation method: observation of three times a day, morning and 8:10 in the morning l1: 00, 4:00 pm from the egg began to observe, observe the insect in different soil types and different moisture content in the hatching and emergence rate. 2 Results and analysis 2.1 mango leaf cutting weevil in different soil water content in the survival rate of ten can be seen from the figure of a water content below 10%, the adult emergence rate was 0%, then with water increases, the emergence rate was significantly increased; water content was 25%. Emergence rate of 80%, the highest value; However, with increasing water content, but rapid emergence rate of decline in Singapore: when 35% of water birds, their emergence was 0%. 2.2 mango leaf cutting weevil in different water Organisation survival of clay i} i �� It can be seen from the figure, water content below 10%, the adult emergence rate was 0%, then as the water content increases, the eclosion rate has increased by; water content of 25%, the emergence rate of 20% to Sheng high value, and then with the water content increased, but decreased the emergence rate; when the ancient water to 30%, its emergence rate was 0%. 2.3 mango leaf-cutting sand at various water towel when the survival rate of less than 10% of sand moisture content, the adult emergence rate was 0%, then as the water content increases,[link widoczny dla zalogowanych], the emergence rate is high when increasing receive as a guest water content of 20%, the emergence rate of 24%, the highest value; However, with the water content continues to increase, but decreased the emergence rate, when the water content of 35%, the emergence rate of 0% (see Figure III .) Figure 2.4 Comparison of hatching larvae can be seen that four egg with the birds in the different soil water in the hatching rate but also the difference in the hatching of clay suitable for the pest, with an average of 85%; loam, followed by an average of 70%; sand ten worst, with an average of 50%. The water content of 0%, the insect does not hatch Fujian Science & Technology of the water content of 35%, the leaves quickly decay, and the eggs failed to hatch. 2.5 soil type on mango leaf cutting weevil larvae pupate in the effects due to the impact of soil conditions, larvae pupate in the time and means are also different. According to our observation, mango leaf cutting weevil larvae pupate mostly buried, and buried a variety of ways, and the soil type and soil moisture related. Figure V shows a more favorable loam buried larvae pupate, followed by sand, clay is the worst. The study also noted that the clay in the larvae after a month, there is still not buried pupation,[link widoczny dla zalogowanych], and continue to remain in the dry leaves. Soil type and moisture content of 2.6 and mango leaf cutting weevil Sleep Test of relationship between the rate of observations (Figure VI) shows that insect dormancy and soil type and soil moisture related. From the perspective of soil types, loamy soil is suitable for the insect's sleep, an average of 29%; clay, followed by an average of 26%: sand lowest 5%. View from the soil moisture content, water content of 10% loam, the most suitable for sleep, stick with disabilities is 20%, 15% sand. 3 Summary In summary, under the experimental conditions, water content of 25% of the figure two sets of water fl0l5202530 Figure III clay, sandy soil of ancient water (%). '. 0 no vertebral bi brother Xiang Figure VI dormancy and water relations of soil types and the most suitable leaf-cutting plans loam weevil survival, when the water content below 10% or higher than 35%, the insect almost alive. Thus, soil type and soil water content of mango leaf cutting weevil survival of two important factors, according to the local parts available: the level of soil conditions and irrigation development mango leaf-cutting measures as a scientific basis for integrated control . Reference to the text initiative 1, Qian Ting Yu. Mango leaf-cutting as a preliminary study. Plant Protection 1982, (4): 25.262, but the nation-building, and so on. Soil conditions on the mango weevil Leaf development and survival. Guangxi Science & Technology, 1989, (4) :22-25 .3, and the mouth dry May. West to take the new brand of mango weevil three insect classification of insects, 1982, (3) :231-232 .4, but nation-building and so on. Mango Leaf as the fitness of the host. Journal of Ecology, 1992, f2) :25-26 .5,[link widoczny dla zalogowanych], three-character study. Mango leaf-cutting as the spawning habits of the impact on the population. Fujian Fruit, 1995, (1) :28-29 .6, Fu school Trinity mango leaves control plane leaves as the removal of the test. Fujian Fruit, 1995,[link widoczny dla zalogowanych], (2l :43-44 .7, DK.Butani. Indian mango pests and diseases. Renditions 1978f61000O0008642 drunk halo of tropical crops Shuai Qi Qu t * such a shame Shuai Shuai 0 �� cricket Colombian Army 0
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